ci: add PR labeler workflow

Labels PRs based on package type and target branch.

Signed-off-by: George Sapkin <[email protected]>

Author: GeorgeSapkin

.github/labeler.yml

@@ -0,0 +1,64 @@
+"GitHub/CI":
+- changed-files:
+  - any-glob-to-any-file:
+    - ".github/**"
+
+"admin":
+- changed-files:
+  - any-glob-to-any-file:
+    - "admin/**"
+"devel":
+- changed-files:
+  - any-glob-to-any-file:
+    - "devel/**"
+"fonts":
+- changed-files:
+  - any-glob-to-any-file:
+    - "fonts/**"
+"ipv6":
+- changed-files:
+  - any-glob-to-any-file:
+    - "ipv6/**"
+"kernel":
+- changed-files:
+  - any-glob-to-any-file:
+    - "kernel/**"
+"lang":
+- changed-files:
+  - any-glob-to-any-file:
+    - "lang/**"
+"libs":
+- changed-files:
+  - any-glob-to-any-file:
+    - "libs/**"
+"mail":
+- changed-files:
+  - any-glob-to-any-file:
+    - "mail/**"
+"multimedia":
+- changed-files:
+  - any-glob-to-any-file:
+    - "multimedia/**"
+"net":
+- changed-files:
+  - any-glob-to-any-file:
+    - "net/**"
+"sound":
+- changed-files:
+  - any-glob-to-any-file:
+    - "sound/**"
+"utils":
+- changed-files:
+  - any-glob-to-any-file:
+    - "utils/**"
+
+# branches
+"master":
+- base-branch:
+  - "master"
+"OpenWrt 23.05 (end of support)":
+- base-branch:
+  - "openwrt-23.05"
+"OpenWrt 24.10":
+- base-branch:
+  - "openwrt-24.10"

.github/workflows/labeler.yml

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+name: 'Pull Request Labeler'
+on:
+  - pull_request_target
+
+permissions:
+  contents: read
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+
+    name: Pull Request Labeler
+    runs-on: ubuntu-slim
+    steps:
+      - uses: actions/labeler@v6
+        with:
+          repo-token: '${{ secrets.GITHUB_TOKEN }}'
+          sync-labels: true