Move capitalize into twenty-shared (#9414)

capitalize had been moved into twenty-shared. Let's remove the
duplicates in server and front !

packages/twenty-front/src/utils/string/__tests__/capitalize.test.ts

@@ -1,11 +0,0 @@
-import { capitalize } from '../capitalize';
-
-describe('capitalize', () => {
-  it('should capitalize a string', () => {
-    expect(capitalize('test')).toBe('Test');
-  });
-
-  it('should return an empty string if input is an empty string', () => {
-    expect(capitalize('')).toBe('');
-  });
-});