feat: scaffold starter template with TypeScript, CRD list view, CI, ArtifactHub

Adds full plugin starter template including:
- package.json with @kinvolk/headlamp-plugin devDependency and standard scripts
- tsconfig.json extending headlamp plugin config
- vitest.config.mts + vitest.setup.ts (jsdom, NODE_ENV=test, localStorage shim)
- src/index.tsx: registers sidebar entry and route for ResourceListPage
- src/components/ResourceListPage.tsx: placeholder CRD list view with TODO guide
- src/components/ResourceListPage.test.tsx: example tests using vi.mock pattern
- .github/workflows/ci.yaml: delegates to shared plugin-ci.yaml
- .github/workflows/release.yaml: delegates to shared plugin-release.yaml
- artifacthub-pkg.yml + artifacthub-repo.yml: ArtifactHub metadata with TODO markers
- renovate.json: Mend Renovate config for weekly dependency updates
- README.md: complete getting-started guide
- CONTRIBUTING.md: local dev, code style, testing, PR process
- LICENSE: Apache-2.0

Co-Authored-By: Paperclip <noreply@paperclip.ing>

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "my-headlamp-plugin",
+  "version": "0.1.0",
+  "description": "A Headlamp plugin for Kubernetes",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/YOUR_ORG/YOUR_REPO.git"
+  },
+  "bugs": {
+    "url": "https://github.com/YOUR_ORG/YOUR_REPO/issues"
+  },
+  "homepage": "https://github.com/YOUR_ORG/YOUR_REPO#readme",
+  "author": "YOUR_NAME",
+  "license": "Apache-2.0",
+  "scripts": {
+    "start": "headlamp-plugin start",
+    "build": "headlamp-plugin build",
+    "package": "headlamp-plugin package",
+    "tsc": "tsc --noEmit",
+    "lint": "eslint --ext .ts,.tsx src/",
+    "lint:fix": "eslint --ext .ts,.tsx --fix src/",
+    "format": "prettier --write src/",
+    "format:check": "prettier --check src/",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
+  "devDependencies": {
+    "@kinvolk/headlamp-plugin": "^0.13.0"
+  }
+}