refactor: centralize Ant Design imports and remove unused components

- Replaced direct imports from 'antd' with centralized imports from '@/shared/antd-imports' across multiple components for improved maintainability.
- Removed the TawkTo component as it is no longer needed.
- Updated the CustomAvatar and various other components to utilize the new import structure, enhancing code clarity and consistency.
- Introduced the InviteTeamMembersModal component, streamlining the invitation process for team members.

worklenz-frontend/src/components/common/invite-team-members-modal/index.ts

@@ -0,0 +1 @@
+export { default } from './InviteTeamMembersModal';