feat: add PR labeler to show what parts of Zinit are changed

.github/labeler.yml

@@ -0,0 +1,15 @@
+# Add 'zinit` label to any change in a zinit file
+zinit:
+- zinit*.zsh
+# Add 'scripts` label to any change in scripts/ directory
+scripts:
+- scripts/*
+# Add 'docs` label to any change in docs/ directory
+docs:
+- docs/*
+# Add 'tests` label to any change in tests/ directory
+tests:
+- tests/*
+ci/cd:
+- .github/*
+- .github/**/*

.github/workflows/labeler.yml

@@ -0,0 +1,18 @@
+# This workflow will triage pull requests and apply a label based on the
+# paths that are modified in the pull request.
+
+name: Labeler
+on: [pull_request]
+
+jobs:
+  label:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+    - uses: actions/labeler@v4
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"