feat: added an auto-labeller for documentation PRs. (#877)

Author: Jaskowicz1

.github/labeler.yml

@@ -0,0 +1,5 @@
+documentation:
+- '**Doxyfile'
+- '**docpages/**'
+- '**/*.h'
+- '**/documentation.yml'

.github/workflows/labeler.yml

@@ -0,0 +1,22 @@
+name: "Pull Request Labeler"
+on:
+- pull_request_target
+
+permissions:
+  contents: read
+
+jobs:
+  triage:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@8ca2b8b2ece13480cda6dacd3511b49857a23c09 # v2.5.1
+      with:
+        egress-policy: audit
+
+    - uses: actions/labeler@ac9175f8a1f3625fd0d4fb234536d26811351594 # v4.3.0
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}