Add PR labeler

.github/labeler.yml

@@ -0,0 +1,31 @@
+# See help here: https://github.com/marketplace/actions/labeler
+
+cpp:
+  - changed-files:
+      - any-glob-to-any-file:
+          - model_api/cpp/*
+
+python:
+  - changed-files:
+      - any-glob-to-any-file:
+          - model_api/python/*
+
+tests:
+  - changed-files:
+      - any-glob-to-any-file:
+          - tests/*
+
+docs:
+  - changed-files:
+      - any-glob-to-any-file:
+          - docs/*
+          - "**/*.md"
+          - "LICENSE"
+
+build:
+  - changed-files:
+      - any-glob-to-any-file:
+          - ".github/**/*"
+          - ".pre-commit-config.yaml"
+          - "pyproject.toml"
+          - "**/CMakeLists.txt"

.github/workflows/pr-labeler.yml

@@ -0,0 +1,15 @@
+name: "Pull Request Labeler"
+permissions: read-all
+on:
+  - pull_request_target
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v5
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"