ci: add PR labeler workflow

This introduces an automatic pull request labeler using GitHub Actions to streamline workflow management.

Author: eazyhozy

.github/labeler.yml

@@ -0,0 +1,4 @@
+Workflow:
+  - changed-files:
+      - any-glob-to-any-file:
+          - .github/workflows/**

.github/workflows/pr-labeler.yml

@@ -0,0 +1,9 @@
+name: 'Pull Request Labeler'
+on:
+  pull_request:
+
+jobs:
+  labeler:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v6