Add labeler workflow to automatically label pr's

.github/labeler.yml

@@ -0,0 +1,20 @@
+# Label definitions for actions/labeler
+
+# Templates label for changes to markdown-templates directory
+templates:
+  - changed-files:
+      - any-glob-to-any-file: "markdown-templates/**/*"
+
+# Workflows label for changes to GitHub workflow files (excluding changes that only change workflows prefixed with _)
+workflows:
+  - changed-files:
+      - all-globs-to-any-files:
+        - ".github/workflows/*.yml"
+        - "!.github/workflows/_*.yml"
+
+# Documentation label for root level .md files and files in /docs/ directory
+documentation:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "*.md"
+          - "docs/**/*"

.github/workflows/_labeler.yml

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+name: Label PRs
+on:
+  - pull_request_target
+
+jobs:
+  labeler:
+    name: PR Labeler
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v5
+        with:
+          sync-labels: true