Add labeler workflow (#91)

Author: lucacome

.github/labeler.yml

@@ -0,0 +1,20 @@
+enhancement:
+  - head-branch: ['^feature/', '^feat/', '^enhancement/', '^enh/']
+
+bug:
+  - head-branch: ['^fix/', '^bug/']
+
+chore:
+  - head-branch: ['^chore/']
+
+tests:
+  - head-branch: ['^tests/', '^test/']
+  - changed-files: ['__tests__/**/*']
+
+documentation:
+  - head-branch: ['^docs/', '^doc/']
+  - changed-files: '**/*.md'
+
+dependencies:
+  - head-branch: ['^deps/', '^dep/', '^dependabot/']
+  - changed-files: ['package.json', 'package-lock.json']

.github/workflows/labeler.yml

@@ -0,0 +1,17 @@
+name: "Pull Request Labeler"
+on:
+  - pull_request_target
+
+permissions:
+  contents: read
+
+jobs:
+  triage:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - uses: joshdales/labeler@68a25980166b8ff8eb977d9a31cab5bd883793e1 # if https://github.com/actions/labeler/pull/203 is merged, use the official action actions/labeler
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"