feat(ci): add codeowners

.github/CODEOWNERS

@@ -0,0 +1,41 @@
+* @nodejs/nodejs-website
+/.* @nodejs/web-infra
+
+/pages/asynchronous-work/ @nodejs/timers
+/pages/asynchronous-work/the-nodejs-event-emitter.md @nodejs/events
+
+/pages/command-line/how-to-use-the-nodejs-repl.md @nodejs/repl
+
+/pages/diagnostics/ @nodejs/diagnostics
+/pages/diagnostics/memory/ @nodejs/diagnostics @nodejs/v8
+/pages/diagnostics/live-debugging/ @nodejs/diagnostics
+/pages/diagnostics/live-debugging/using-inspector.md @nodejs/diagnostics @nodejs/inspector
+/pages/diagnostics/poor-performance/ @nodejs/diagnostics @nodejs/performance
+/pages/diagnostics/flame-graphs.md @nodejs/diagnostics @nodejs/performance
+
+/pages/getting-started/an-introduction-to-the-npm-package-manager.md @nodejs/npm
+/pages/getting-started/debugging.md @nodejs/diagnostics
+/pages/getting-started/profiling.md @nodejs/diagnostics @nodejs/performance
+/pages/getting-started/the-v8-javascript-engine.md @nodejs/v8
+/pages/getting-started/security-best-practices.md @nodejs/security-wg
+/pages/getting-started/userland-migrations.md @nodejs/userland-migrations
+/pages/getting-started/nodejs-with-webassembly.md @nodejs/wasi
+/pages/getting-started/fetch.md @nodejs/undici @nodejs/web-standards
+/pages/getting-started/websocket.md @nodejs/web-standards
+
+/pages/http/ @nodejs/http
+
+/pages/manipulating-files/ @nodejs/fs
+
+/pages/modules/ @nodejs/loaders
+/pages/modules/how-to-use-streams.md @nodejs/streams
+/pages/modules/backpressuring-in-streams.md @nodejs/streams
+/pages/modules/abi-stability.md @nodejs/node-api
+/pages/modules/publishing-node-api-modules.md @nodejs/node-api
+/pages/modules/publishing-a-package.md @nodejs/npm
+
+/pages/test-runner/ @nodejs/test_runner
+
+/pages/typescript/ @nodejs/typescript
+
+/pages/node-api/ @nodejs/node-api

.github/workflows/request-codeowner-review.yml

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+name: Request Codeowner Reviews
+
+on:
+  pull_request_target:
+    types: [opened]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  request-reviews:
+    name: Request Codeowner Reviews
+    runs-on: ubuntu-latest
+    permissions:
+      # Required to request reviews and post comments
+      pull-requests: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Request Codeowner Reviews
+        uses: pkgjs/request-codeowner-review@d39b61c5e1399655dce6287b3b119af93dee235a # v1.1.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          output-mode: comment