Add workflow to remove old artifacts and update build.yml

Added a new GitHub Actions workflow (`remove-old-artifacts.yml`)
to clean up artifacts older than 7 days, scheduled to run daily
at 1 AM. Updated `build.yml` to adjust artifact naming and set
retention to 7 days. Updated `AnyBar.Localization.slnx` to
include the new workflow file under `/Solution Items/`.

Author: Jack251970

.github/workflows/build.yml

@@ -59,4 +59,5 @@ jobs:
         uses: actions/upload-artifact@v5
         with:
           name: AnyBar.Localization
+          retention-days: 7
           path: AnyBar.Localization/bin/Release

.github/workflows/remove-old-artifacts.yml

@@ -0,0 +1,24 @@
+name: Remove old artifacts
+
+on:
+  schedule:
+    # Every day at 1am
+    - cron: '0 1 * * *'
+
+jobs:
+  remove-old-artifacts:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    # For private repos
+    permissions:
+      actions: write
+
+    steps:
+    - name: Remove old artifacts
+      uses: c-hive/gha-remove-artifacts@v1.4.0
+      with:
+        age: '7 days' # '<number> <unit>', e.g. 5 days, 2 years, 90 seconds, parsed by Moment.js
+        # Optional inputs
+        # skip-tags: true
+        # skip-recent: 5

AnyBar.Localization.slnx

@@ -4,6 +4,7 @@
     <File Path=".github/FUNDING.yml" />
     <File Path=".github/workflows/build.yml" />
     <File Path=".github/workflows/publish.yml" />
+    <File Path=".github/workflows/remove-old-artifacts.yml" />
     <File Path="global.json" />
     <File Path="LICENSE" />
     <File Path="README.md" />