Properly generate sourceMap and add launch config for chrome debugging

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "pwa-chrome",
+            "request": "launch",
+            "runtimeExecutable": "/usr/bin/chromium",
+            "name": "Launch Chrome against localhost",
+            "url": "http://localhost:30000/game",
+            "webRoot": "${workspaceFolder}/dist"
+        }
+    ]
+}

tsconfig.json

@@ -6,7 +6,8 @@
         "esModuleInterop": true,
         "moduleResolution": "node",
         "forceConsistentCasingInFileNames": true,
-        "strict": true
+        "strict": true,
+        "sourceMap": true
     },
     "include": ["src"]
 }