* refactor: removed unused files, dependencies and added valid callback URL * chore: update env example * test: fixed issue with subscription on deleteUserCollection in UserCollection module * test: fixed time related issue with auth service methods * chore: removed unused dependencies in auth.service file --------- Co-authored-by: Mir Arif Hasan <arif.ishan05@gmail.com> Co-authored-by: Balu Babu <balub997@gmail.com>