Added a call to `services.AddHttpClient();` in the `DependencyInjection` class within `DependencyInjection.cs`. This change registers the `HttpClient` service in the dependency injection container, allowing the application to use managed `HttpClient` instances.
Updated the `LuckyPennySoftwareLicenseKey` property in the
`ConfigurationOptions` class to allow null values by changing
it from a non-nullable string with a default value of an empty
string to a nullable string (`string?`). This change enables
explicit representation of the absence of a license key using
`null` instead of an empty string.
Introduced a new `DependencyInjection` class in the `ReC.Application` namespace to streamline service registration.
- Added `AddRecServices` extension method for `IServiceCollection` to configure AutoMapper and MediatR with assembly scanning.
- Included `ConfigurationOptions` class to allow configuration of a `LuckyPennySoftwareLicenseKey`.
- Added `using` directives for `Microsoft.Extensions.DependencyInjection` and `System.Reflection` to support dependency injection and assembly scanning.
