Create backend

- NodeJs
 - Express
 - Socket.io
 - Eslint
 - TypeScript

back/src/Controller/IoSocketController.ts

@@ -0,0 +1,30 @@
+import socketIO = require('socket.io');
+import {Socket} from "socket.io";
+import * as http from "http";
+import {JoinRoomMessage} from "@Model/Websocket/JoinRoomMessage";
+
+export class IoSocketController{
+    Io: socketIO.Server;
+    constructor(server : http.Server) {
+        this.Io = socketIO(server);
+        this.ioConnection();
+    }
+
+    ioConnection() {
+        this.Io.on('connection',  (socket: Socket) => {
+            //TODO check token access
+
+            /*join-rom event permit to join one room.
+                message :
+                    userId : user identification
+                    roomId: room identification
+                    positionXUser: user x position map
+                    positionYUser: user y position on map
+            */
+            socket.on('join-room', (message : JoinRoomMessage) => {
+                socket.join(message.roomId);
+                socket.to(message.roomId).emit('join-room', message.toString());
+            });
+        });
+    }
+}