Set up an automatic PR labeler

.github/labeler.yml

@@ -0,0 +1,11 @@
+ci-cd:
+- .github/**/*
+
+grammar:
+- grammar.js
+
+bindings:
+- bindings/**/*
+
+examples:
+- examples/**/*

.github/workflows/labeler.yml

@@ -0,0 +1,14 @@
+name: "Pull Request Labeler"
+
+on:
+- pull_request_target
+
+jobs:
+  triage:
+    permissions:
+      contents: read
+      pull-requests: write
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v4