CRUD API for media + get-by-id for media type (#13934)

* CRUD API for media + get by ID for media types

* A little housekeeping for documents (align with media)

* Update Open API json

* Add messages to NotFound results (both content and media)

* Review changes; use same model for content and media URLs + return bad request when trying to move something to trash that is already in trash

* Fix bad merge + rename base (response) classes appropriately between both media and content types

src/Umbraco.Cms.Api.Management/Controllers/Document/DocumentControllerBase.cs

@@ -11,4 +11,5 @@ namespace Umbraco.Cms.Api.Management.Controllers.Document;
 [ApiExplorerSettings(GroupName = nameof(Constants.UdiEntityType.Document))]
 public abstract class DocumentControllerBase : ContentControllerBase
 {
+    protected IActionResult DocumentNotFound() => NotFound("The requested Document could not be found");
 }