feature: surveillance GDEV via WebSocket

package.json

@@ -7,6 +7,7 @@
   "license": "MIT",
   "scripts": {
     "prepublish": "tsc",
+    "build:w": "tsc --watch",
     "build": "tsc && NODE_ENV=production  webpack --config webpack.prod.js",
     "build:front": "NODE_ENV=production webpack --config webpack.prod.js",
     "start": "webpack-dev-server --config webpack.dev.js --open",
@@ -25,7 +26,8 @@
     "nodemailer": "^6.2.1",
     "pug": "^2.0.4",
     "typescript": "^3.4.3",
-    "vue": "^2.6.11"
+    "vue": "^2.6.11",
+    "ws": "^8.7.0"
   },
   "devDependencies": {
     "@types/axios": "^0.14.0",
@@ -38,6 +40,7 @@
     "@types/node": "~8.9.4",
     "@types/nodemailer": "^6.1.1",
     "@types/pug": "^2.0.4",
+    "@types/ws": "^8.5.3",
     "clean-webpack-plugin": "^3.0.0",
     "css-loader": "^3.5.3",
     "file-loader": "^6.0.0",