feat: auto label PR workflow (#42)

.github/labeler.yml

@@ -0,0 +1,14 @@
+ci:
+  - .github/**/*
+
+docs:
+  - changed-files:
+      - any-glob-to-any-file: /packages/docs/*
+
+app:
+  - changed-files:
+      - any-glob-to-any-file: /packages/app/*
+
+studio:
+  - changed-files:
+      - any-glob-to-any-file: /packages/studio/*

.github/workflows/labeler.yml

@@ -0,0 +1,17 @@
+name: "PR Labeler"
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Label PR
+        uses: actions/labeler@v5
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN}}"