Add lerna

package.json

@@ -0,0 +1,39 @@
+{
+  "name": "root",
+  "private": true,
+  "scripts": {
+    "start": "lerna run --parallel start"
+  },
+  "devDependencies": {
+    "@types/cors": "^2.8.7",
+    "@types/express": "^4.17.8",
+    "@types/node": "^14.11.2",
+    "@types/socket.io": "^2.1.11",
+    "@types/socket.io-client": "^1.4.34",
+    "@types/uuid": "^8.0.0",
+    "@typescript-eslint/eslint-plugin": "^3.9.1",
+    "@typescript-eslint/parser": "^3.9.1",
+    "autoprefixer": "^9.8.5",
+    "lerna": "^3.22.1",
+    "css-loader": "^3.5.2",
+    "cssnano": "^4.1.10",
+    "eslint": "^7.2.0",
+    "eslint-config-prettier": "^6.11.0",
+    "eslint-plugin-import": "^2.21.2",
+    "eslint-plugin-prettier": "^3.1.4",
+    "eslint-plugin-unused-imports": "^0.1.3",
+    "file-loader": "^6.1.0",
+    "firebase": "^7.22.0",
+    "gl-matrix": "^3.3.0",
+    "prettier": "^2.0.5",
+    "sdf-2d": "^0.4.0",
+    "socket.io-client": "^2.3.1",
+    "typescript": "^3.8.3",
+    "uuid": "^8.2.0"
+  },
+  "dependencies": {
+    "decla.red-frontend": "file:frontend",
+    "decla.red-server": "file:backend",
+    "shared": "file:shared"
+  }
+}