Add VS Code Chrome debug configuration

.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": "attach",
+			"name": "Attach to Chrome",
+			"port": 9222, // must run Chrome with a flag: google-chrome --remote-debugging-port=9222
+			"urlFilter": "http://127.0.0.1:1999/*",
+			"webRoot": "${workspaceFolder}"
+		}
+	]
+}