fix: added energy-management

energy-management/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "energy-management",
+  "private": true,
+  "workspaces": [
+    "backend",
+    "frontend"
+  ],
+  "scripts": {
+    "dev:backend": "npm run dev -w backend",
+    "dev:frontend": "npm run dev -w frontend",
+    "build": "npm run build -w backend && npm run build -w frontend",
+    "test": "npm run test -w backend"
+  }
+}