chore: add recommendations extensions vitest (#11610)

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["vitest.explorer"]
+}

vitest.workspace.ts

@@ -0,0 +1,6 @@
+import { defineWorkspace } from 'vitest/config'
+
+export default defineWorkspace([
+  './vitest.unit.config.ts',
+  './vitest.e2e.config.ts',
+])