-> modified Ui state class
-> added unit tests for LoginViewModel

-> updated LoginViewModel unit tests
-> added unit tests for functions related to login feature in UserAuthRepositoryTest

-> created ClientRepository, its implementation and unit tests.
-> removed Client related methods from UserAuthRepository, and its unit tests.
-> injected ClientRepositoryImp to LoginViewModel through Hilt, and added its entry to repository module of DI

-> injected preferences helper dependency through hilt

…tivity-mvvm-migration

# Conflicts:
#	app/src/main/java/org/mifos/mobile/injection/module/RepositoryModule.kt
#	app/src/main/java/org/mifos/mobile/repositories/ClientRepository.kt
#	app/src/main/java/org/mifos/mobile/repositories/ClientRepositoryImp.kt
#	app/src/main/java/org/mifos/mobile/repositories/UserAuthRepository.kt
#	app/src/main/java/org/mifos/mobile/repositories/UserAuthRepositoryImp.kt
#	app/src/test/java/org/mifos/mobile/repositories/ClientRepositoryImpTest.kt

…tivity-mvvm-migration

# Conflicts:
#	app/src/main/java/org/mifos/mobile/injection/module/RepositoryModule.kt
#	app/src/main/java/org/mifos/mobile/repositories/UserAuthRepository.kt
#	app/src/main/java/org/mifos/mobile/repositories/UserAuthRepositoryImp.kt
#	app/src/test/java/org/mifos/mobile/repositories/UserAuthRepositoryImpTest.kt