Updated GlobalExceptionHandlerOptions to replace HttpExceptionMapping with HttpExceptionHandler. Removed HttpExceptionMapping class and introduced HttpExceptionHandler for managing exceptions in HTTP requests. Added methods for creating specific exception handlers and default handlers for common exceptions, with JSON serialization for error messages.
Updated the accessibility of the RegisteredMappings field to internal and introduced a DefaultMapping property. Modified the Add method to support setting a mapping as default, with adjusted logic for adding mappings.
Updated `GlobalExceptionHandlerOptions` to use a new `_registeredMappings` dictionary for `HttpExceptionMapping` objects, enhancing flexibility in mapping exceptions to HTTP responses. Renamed `RegisterException` to `Add` to reflect its new functionality. Removed the `HttpResponse` record definition and introduced a new `HttpExceptionMapping` record, which includes a static `Create` method for easier instantiation of mappings.
Introduces `GlobalExceptionHandlerMiddleware` for managing exceptions in the request pipeline, logging them, and returning JSON error responses. A new project, `DigitalData.Core.Exceptions.Middleware`, is created to house this middleware and related classes. The `GlobalExceptionHandlerOptions` class allows for custom exception registration with specific HTTP status codes, while a new `HttpResponse` record encapsulates status codes and messages for structured responses. The middleware is registered in the `DependencyInjection` class for easy integration.
