Allow extensions to define cluster features (#1125)

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

extensions/support-page/Makefile

@@ -0,0 +1,5 @@
+install-deps:
+	npm install
+
+build: install-deps
+	npm run build

extensions/support-page/tsconfig.json

@@ -23,7 +23,7 @@
     }
   },
   "include": [
-    "renderer.ts",
+    "renderer.tsx",
     "../../src/extensions/npm/**/*.d.ts",
     "src/**/*"
   ]