Add io socket message to share user position.

- Add message 'user-position' to share position in a room.
 - Change JoinRoomMessage to MessageUserPosition to have all data to share position and user information
 - Fix error alias to build

back/tsconfig.json

@@ -40,12 +40,11 @@
     // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
 
     /* Module Resolution Options */
-    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
-    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
-    "baseUrl": "src",
+    "moduleResolution": "node",               /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    "baseUrl": ".",                           /* Base directory to resolve non-absolute module names. */
     "paths": {
-      "@Controller": ["Controller/*"],
-      "@Model": ["Model/*"]
+      "@Controller/*": ["src/Controller/*"],
+      "@Model/*": ["src/Model/*"]
     },                                        /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
     // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
     // "typeRoots": [],                       /* List of folders to include type definitions from. */