Allow extensions to define cluster features (#1125)

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

extensions/metrics-cluster-feature/webpack.config.js

@@ -0,0 +1,38 @@
+const path = require('path');
+
+module.exports = [
+  {
+    entry: './renderer.tsx',
+    context: __dirname,
+    target: "electron-renderer",
+    mode: "production",
+    module: {
+      rules: [
+        {
+          test: /\.tsx?$/,
+          use: 'ts-loader',
+          exclude: /node_modules/,
+        },
+      ],
+    },
+    externals: [
+      {
+        "@k8slens/extensions": "var global.LensExtensions",
+        "react": "var global.React",
+        "mobx": "var global.Mobx"
+      }
+    ],
+    resolve: {
+      extensions: [ '.tsx', '.ts', '.js' ],
+    },
+    output: {
+      libraryTarget: "commonjs2",
+      globalObject: "this",
+      filename: 'renderer.js',
+      path: path.resolve(__dirname, 'dist'),
+    },
+    node: {
+      __dirname: false
+    }
+  },
+];