Refactored pacakge structure for cleaner project structure

...u/idatt2016/v233/SmartMat/config/security/CorsConfig.java

...att2016/v233/SmartMat/config/security/SecurityConfig.java

...v233/SmartMat/controller/group/AchievementController.java

...2016/v233/SmartMat/controller/group/FridgeController.java

...233/SmartMat/controller/group/ShoppingListController.java

...t2016/v233/SmartMat/controller/group/WasteController.java

.../v233/SmartMat/controller/group/WeeklyMenuController.java

...6/v233/SmartMat/controller/product/AllergyController.java

...6/v233/SmartMat/controller/product/ProductController.java

...16/v233/SmartMat/controller/product/RecipeController.java

...33/SmartMat/controller/user/AuthenticationController.java

...att2016/v233/SmartMat/controller/user/UserController.java

.../v233/SmartMat/dto/request/group/ShoppingListRequest.java

...att2016/v233/SmartMat/dto/request/group/WasteRequest.java

...016/v233/SmartMat/dto/request/product/AllergyRequest.java

...16/v233/SmartMat/dto/request/product/FavoriteRequest.java

...33/SmartMat/dto/request/product/FridgeProductRequest.java

...016/v233/SmartMat/dto/request/product/ProductRequest.java

...2016/v233/SmartMat/dto/request/product/RecipeRequest.java

...datt2016/v233/SmartMat/dto/request/user/LoginRequest.java