👔 allow Jest VSCode extension to run successfully on startup (#6810)

* ⚡️ allow Jest VSCode extension to run on startup
- Latest Jest VSCode extension has great support for the new Testing sidebar - easy detection without having to run the full test suite

* Add debug launcher as well

* Fixed a jest.autoRun setting to ensure you always get accurate results
- Picked up here: https://github.com/jest-community/vscode-jest/blob/master/README.md#how-to-trigger-the-test-run

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+  "configurations": [
+    {
+      "type": "node",
+      "name": "vscode-jest-tests",
+      "request": "launch",
+      "console": "integratedTerminal",
+      "internalConsoleOptions": "neverOpen",
+      "disableOptimisticBPs": true,
+      "cwd": "${workspaceFolder}",
+      "runtimeExecutable": "yarn",
+      "args": ["test", "--runInBand", "--watchAll=false"]
+    }
+  ]
+}

.vscode/settings.json

@@ -2,5 +2,11 @@
   "editor.codeActionsOnSave": {
     "source.fixAll.eslint": true
   },
-  "typescript.tsdk": "node_modules/typescript/lib"
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "jest.jestCommandLine": "yarn test",
+  "jest.autoRun": {
+    "watch": false,
+    "onSave": "test-file",
+    "onStartup": ["all-tests"]
+  }
 }