Feat/error serializer

[MDelarosa1993]

Controllers:

• Added Rescue for RecordNotFound: All controllers now handle ActiveRecord::RecordNotFound exceptions using a not_found_response method.
• Added Not Found Response: Added a standardized JSON error response for record not found errors in each controller.
• Updated index Methods: Several controllers now filter or sort records based on parameters.
• Models and Serializers:

Error Handling Classes: Introduced ErrorMessage and ErrorSerializer classes to standardize the JSON format for error responses. Specific Changes:

• InvoicesController: Handles errors and filters invoices by status and merchant.
• ItemMerchantsController: Retrieves items for a specific merchant.
• ItemsController: Added sorting functionality and updated error handling.
• MerchantCustomersController: Retrieves customers for a specific merchant.
• MerchantItemsController: Finds and shows an item, handling errors if not found.
• MerchantsController: Improved merchant creation and destruction with enhanced error handling.
• These changes improve error handling consistency and add new functionalities for sorting and filtering.

[CCirbo]

Great working with you on this, I enjoyed creating the error serializer with all that goes along with it and then watching it work was fantastic!!

[TDManning]

This looks very similar to what we did in class. Lets add it and explore it further.