Convert class to provider function for modules

[masum-ulu]

Todo

• We will change all <module-name>ConfigModule | <module-name>Module (like ThemeShared or CoreModule) classes
  to provide<module-name>Config function
• Some modules have own forRoot method e.g: ThemeShared, forRoot and forChild methods will be stay but the logic will move to also a provide functions with the args.