chore: setup vitest

vitest.setup.component.ts

@@ -0,0 +1,12 @@
+import * as matchers from '@testing-library/jest-dom/matchers';
+import { cleanup } from '@testing-library/svelte';
+import {
+    afterEach,
+    expect,
+} from 'vitest';
+
+expect.extend(matchers);
+
+afterEach(() => {
+    cleanup();
+});