Added socket.io

package.json

@@ -4,6 +4,7 @@
   "dependencies": {
     "@types/express": "^4.17.9",
     "@types/node": "^15.0.1",
+    "@types/socket.io": "^3.0.2",
     "better-sqlite3": "^7.1.5",
     "connect-busboy": "0.0.2",
     "cookie-parser": "^1.4.5",
@@ -11,6 +12,7 @@
     "ejs": "^3.1.6",
     "express": "^4.6.1",
     "express-fileupload": "^1.2.1",
+    "socket.io": "^4.1.2",
     "ts-node": "^9.0.0",
     "typescript": "^4.1.2",
     "uuid": "^8.3.2",