ci: add PR labeler action (#18109)

* ci: standardize auto labeling

* chore: fix key name

* chore: add ESLint label

* chore: update github actions label

* ci: update labeler config

.github/labeler.yml

@@ -0,0 +1,29 @@
+documentation:
+- any:
+  - changed-files:
+    - all-globs-to-all-files: ['docs/**', '!lib/rules/**']
+
+rule:
+- any:
+  - changed-files:
+    - any-glob-to-any-file: ['lib/rules/**']
+
+cli:
+- any:
+  - changed-files:
+    - any-glob-to-any-file: ['lib/cli.js', 'lib/options.js', 'lib/cli-engine/**', 'lib/eslint/**']
+
+core:
+- any:
+  - changed-files:
+    - any-glob-to-any-file: ['lib/{config,eslint,linter,rule-tester,source-code}/**', 'lib/api.js']
+
+formatter:
+- any:
+  - changed-files:
+    - any-glob-to-any-file: ['lib/cli-engine/formatters/**']
+
+"github actions":
+- any:
+  - changed-files:
+    - any-glob-to-any-file: ['.github/workflows/**']

.github/workflows/pr-labeler.yml

@@ -0,0 +1,12 @@
+name: "Pull Request Labeler"
+on: pull_request_target
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v5
+      with:
+        sync-labels: .github/labeler.yml