Tweak issue templates

**Summary**

- Implement new labels ("Package: Addition Request"; "Package: Removal Request"; "Package: Update Request")
- Unify style
- Unify wording
- Fix typo

.github/ISSUE_TEMPLATE/report-a-bug.yml

@@ -1,5 +1,5 @@
 ---
-name: Bug / Defect Report
+name: Report a bug or defect
 description: Report problems, defects and bugs with Solus, the installer, or software we ship.
 labels:
   - Bug
@@ -7,10 +7,10 @@ body:
   - type: checkboxes
     id: search
     attributes:
-      label: Please confirm there isn't an existing open bug report
-      description: Before opening a new issue, please search [the open bugs](https://github.com/getsolus/packages/issues?q=is%3Aissue+is%3Aopen+label%3ABug) to ensure there is not already an open issue for the problem.
+      label: Please confirm there isn't an open report for this issue
+      description: Before opening a new issue, please search [open bug reports](https://github.com/getsolus/packages/issues?q=is%3Aissue+is%3Aopen+label%3ABug) to ensure there is not an existing one.
       options:
-        - label: I have searched open bugs for this issue
+        - label: I have searched through bug reports
           required: true
   - type: textarea
     id: summary

.github/ISSUE_TEMPLATE/report-packaging-problems.yml

@@ -1,5 +1,5 @@
 ---
-name: Packaging problem report
+name: Report a packaging problem
 description: Report problems with a package. This includes build failures or other issues related to a package. This is *not* for bugs with installed software.
 labels: ["Packaging Problem", "Priority: Normal"]
 title: "packagename: problem with package"
@@ -7,10 +7,10 @@ body:
   - type: checkboxes
     id: search
     attributes:
-      label: Please confirm there isn't an existing open report for this package
-      description: Before opening a new packaging problem report, please search [existing reports](https://github.com/getsolus/packages/labels/Package%20Problem%20Report) to ensure there is not an existing one.
+      label: Please confirm there isn't an open report for this package
+      description: Before opening a new issue, please search [open packaging problem reports](https://github.com/getsolus/packages/labels/Package%20Problem%20Report) to ensure there is not an existing one.
       options:
-        - label: I have searched through package problem reports
+        - label: I have searched through packaging problem reports
           required: true
   - type: input
     id: name

.github/ISSUE_TEMPLATE/request-new-package.yml

@@ -1,15 +1,15 @@
-name: Request a new package
-description: Request a package that isn't in the Solus repository yet.
-labels: ["Package Request", "Priority: Wishlist"]
+name: Request a package to be added
+description: Request a new package to be added to the Solus repository.
+labels: ["Package: Addition Request", "Priority: Wishlist"]
 title: "What's the package name?"
 body:
     - type: checkboxes
       id: search
       attributes:
-        label: Please confirm there isn't an existing package request
-        description: Before opening a new package request, please search [existing package requests](https://github.com/getsolus/packages/labels/Package%20Request) to ensure there is not an existing one.
+        label: Please confirm there isn't an open request for this package
+        description: Before opening a new issue, please search [open package addition requests](https://github.com/getsolus/packages/labels/Package%3A%20Addition%20Request) to ensure there is not an existing one.
         options:
-          - label: I have searched through package requests
+          - label: I have searched through package addition requests
             required: true
     - type: input
       id: homepage

.github/ISSUE_TEMPLATE/request-package-deprecation.yml

@@ -1,38 +0,0 @@
----
-name: Package Deprecation Request
-description: Request deprecation of a package.
-labels:
-  - "Package: Removal Request"
-body:
-  - type: checkboxes
-    id: search
-    attributes:
-      label: Please confirm there isn't already an existing package deprecation request
-      description: Before opening a new package deprecation request, please search [existing package deprecation requests](https://github.com/getsolus/packages/labels/Deprecation%20or%20removal%20from%20repository) to ensure there is not an existing one.
-      options:
-        - label: I have searched through package deprecation requests
-          required: true
-  - type: input
-    id: name
-    attributes:
-      label: Name
-      description: Name of the software.
-    validations:
-      required: true
-  - type: input
-    id: last_update_date
-    attributes:
-      label: Last Update Date
-      description: Date the softawre was last updated.
-  - type: input
-    id: url
-    attributes:
-      label: Link to an announcement of archival or deprecation, if applicable.
-  - type: textarea
-    id: other
-    attributes:
-      label: Reason for deprecation
-      description: |
-        Anything specific about this deprecation. This helps us prioritize issues.
-    validations:
-      required: true

.github/ISSUE_TEMPLATE/request-package-removal.yml

@@ -0,0 +1,38 @@
+---
+name: Request a package to be removed
+description: Request a package to be removed from the Solus repository. The software may be unmaintained, replaced by another project, deprecated, or should be removed for some other reason.
+labels:
+  - "Package: Removal Request"
+body:
+  - type: checkboxes
+    id: search
+    attributes:
+      label: Please confirm there isn't an open request for this package
+      description: Before opening a new issue, please search [open package removal requests](https://github.com/getsolus/packages/issues?q=sort%3Aupdated-desc+is%3Aopen+label%3A%22Package%3A+Removal+Request%22) to ensure there is not an existing one.
+      options:
+        - label: I have searched through package removal requests
+          required: true
+  - type: input
+    id: name
+    attributes:
+      label: Name
+      description: Name of the package.
+    validations:
+      required: true
+  - type: input
+    id: last_update_date
+    attributes:
+      label: Last Update Date
+      description: Date the software was last updated.
+  - type: input
+    id: url
+    attributes:
+      label: Link to an announcement of archival or deprecation, if applicable.
+  - type: textarea
+    id: other
+    attributes:
+      label: Reason for removal
+      description: |
+        Anything specific about this removal. This helps us prioritize issues.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/request-package-update.yml

@@ -1,14 +1,14 @@
 ---
-name: Package Update Request
-description: Request an update to a package available in the repository.
+name: Request a package to be updated
+description: Request an update to a package available in the Solus repository.
 labels:
-  - Package Update Request
+  - "Package: Update Request"
 body:
   - type: checkboxes
     id: search
     attributes:
-      label: Please confirm there isn't already an existing package update request
-      description: Before opening a new package update request, please search [existing package update requests](https://github.com/getsolus/packages/labels/Package%20Update%20Request) to ensure there is not an existing one.
+      label: Please confirm there isn't an open request for this package
+      description: Before opening a new issue, please search [open package update requests](https://github.com/getsolus/packages/labels/Package%3A%20Update%20Request) to ensure there is not an existing one.
       options:
         - label: I have searched through package update requests
           required: true