Enhance unit tests by adding beforeAll hook and importing vi from Vitest

- Updated auth and project validator tests to include the beforeAll hook for improved test setup.
- Added import of vi in the config fixture to facilitate mocking capabilities.

These changes improve the structure and functionality of the testing framework.

Author: umesh-more-cstk

api/tests/unit/validators/auth.validator.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, beforeAll } from 'vitest';
 import { checkSchema, validationResult } from 'express-validator';
 
 const mockReq = (body: any) => ({

api/tests/unit/validators/project.validator.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, beforeAll } from 'vitest';
 import { validationResult } from 'express-validator';
 
 const mockReq = (body: any) => ({

upload-api/tests/fixtures/config.fixture.ts

@@ -1,3 +1,5 @@
+import { vi } from 'vitest';
+
 export const createMockConfig = (overrides: Record<string, any> = {}) => ({
   plan: { dropdown: { optionLimit: 100 } },
   cmsType: 'wordpress',