enhancement: ThemeBuilder and ThemeViewer Implementation

[Edithmark42]

• [x] Route (Database)
  • [x] Test Wrappid Service - /themes
  • [x] Rxefy Service - /themes
• [x] Page (Database)
  • [x] Test Wrappid Service - ThemesManager - appComponent (ThemesManager)
  • [x] Rxefy Service - ThemesManager - appComponent (ThemesManager)
• [x] "ThemesSchema" (Table Created in Both Database)
• [x] Component Creation - ThemesManager
  • [x] CoreDataTable entity="ThemesSchema"
  • [ ] Row Action (Apply - API / Local Store Value Update)

Future Aspect

• [ ] ThemesProvider > User Settings(Database) <> Two Way Sync

[techoneel]

@sumanta-m I'm also assigning the issue since we have to built this UI for creating themes.