chore: add per-widget/integration CODEOWNERS generator

Derive owners from git history per feature folder and keep entries in sync
via a bot workflow on dev, following common monorepo automation patterns.

package.json

@@ -25,6 +25,7 @@
     "release": "semantic-release",
     "scripts:update-bug-report-template": "tsx ./scripts/update-bug-report-template.mts",
     "scripts:update-readme-integrations": "tsx ./scripts/update-integration-list.mts",
+    "scripts:generate-codeowners": "tsx ./scripts/generate-codeowners.mts",
     "start": "concurrently \"pnpm with-env node apps/tasks/tasks.cjs\" \"pnpm with-env node apps/websocket/wssServer.cjs\" \"pnpm -F nextjs start\"",
     "test": "cross-env NODE_ENV=development CI=true vitest run --exclude e2e --coverage.enabled ",
     "test:e2e": "cross-env NODE_ENV=development CI=true vitest e2e",