feat(vitest): add config file for Vitest ✨

Signed-off-by: Vinayak Kulkarni <19776877+vinayakkulkarni@users.noreply.github.com>

vitest.config.ts

@@ -0,0 +1,13 @@
+/// <reference types="vitest" />
+
+import { defineConfig } from 'vite';
+import Vue from '@vitejs/plugin-vue';
+
+export default defineConfig({
+  plugins: [Vue()],
+  test: {
+    setupFiles: ['./test/setup/index.ts'],
+    globals: true,
+    environment: 'happy-dom',
+  },
+});