Refactored HTTP method handling by introducing a `ToHttpMethod`
extension method in `HttpExtensions.cs` to convert string
representations of HTTP methods to `HttpMethod` objects.
Replaced manual `HttpMethod` instantiation with the new
extension method in `InvokeRecActionCommandHandler` for
improved readability and reusability.
Removed unused `using` directives from `HttpExtensions.cs`
and cleaned up the `namespace` declaration. Added a `using`
directive for `ReC.Application.Common` in
`InvokeRecActionCommand.cs` to support the new extension method.
TekH
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