vscode: add debug config to attach to process

This is useful for debugging rouge tests.

.vscode/launch.json

@@ -25,6 +25,13 @@
             "protocol": "inspector",
             "console": "integratedTerminal",
             "internalConsoleOptions": "neverOpen"
+        },
+        {
+            "name": "Attach by Process ID",
+            "processId": "${command:PickProcess}",
+            "request": "attach",
+            "skipFiles": ["<node_internals>/**"],
+            "type": "pwa-node"
         }
     ]
 }