Allow extensions to define cluster features (#1125)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

extensions/metrics-cluster-feature/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "lens-metrics-cluster-feature",
+  "version": "0.1.0",
+  "description": "Lens metrics cluster feature",
+  "renderer": "dist/renderer.js",
+  "lens": {
+    "metadata": {},
+    "styles": []
+  },
+  "scripts": {
+    "build": "webpack --config webpack.config.js",
+    "dev": "npm run build --watch"
+  },
+  "dependencies": {
+    "semver": "^7.3.2"
+  },
+  "devDependencies": {
+    "ts-loader": "^8.0.4",
+    "typescript": "^4.0.3",
+    "webpack": "^4.44.2",
+    "mobx": "^5.15.5",
+    "react": "^16.13.1"
+  }
+}