add jest as extension devDep, go back to using makefile foreach syntax

Signed-off-by: Sebastian Malton <sebastian@malton.name>

extensions/telemetry/package.json

@@ -17,13 +17,14 @@
   "devDependencies": {
     "@k8slens/extensions": "file:../../src/extensions/npm/extensions",
     "@types/analytics-node": "^3.1.3",
+    "analytics-node": "^3.4.0-beta.3",
+    "jest": "^26.6.3",
+    "mobx": "^5.15.5",
+    "node-machine-id": "^1.1.12",
+    "react": "^16.13.1",
     "ts-loader": "^8.0.4",
     "typescript": "^4.0.3",
-    "webpack": "^4.44.2",
-    "mobx": "^5.15.5",
-    "react": "^16.13.1",
-    "node-machine-id": "^1.1.12",
     "universal-analytics": "^0.4.23",
-    "analytics-node": "^3.4.0-beta.3"
+    "webpack": "^4.44.2"
   }
 }