chore: migrate to vitest for 10x faster tests (#257)

* chore migrate to vitest

* chore: cleanup jest stuff

* chore: install the coverage dep

__tests__/utils/app/importExports.test.ts

@@ -1,6 +1,8 @@
 import { ExportFormatV1, ExportFormatV2 } from '@/types/export';
 import { OpenAIModels, OpenAIModelID } from '@/types/openai';
 import { DEFAULT_SYSTEM_PROMPT } from '@/utils/app/const';
+import { it, describe, expect } from 'vitest';
+
 import {
   cleanData,
   isExportFormatV1,