Property level validation for Management API (#15644)

* Property level validation for content - initial implementation

* Always succeed create/update regardless of property level validation errors

* Move old complex editor validation classes to Web.BackOffice so they will be deleted

* Include operation status and property validation errors in ProblemDetails

* Refactor property validation to its own service(s)

* Make the problem details builder a little more generic towards extensions

* Validation for item and branch publish

* Moved malplaced test

* Get rid of a TODO

* Integration tests for content validation service

* Simplify validation service

* Add missing response types to create and update for document and media

* Remove test that no longer applies

* Use "errors" for model validation errors (property validation errors)

* Split create/update and validation into their own endpoints

* Fix forward merge

* Correct wrong assumption for missing properties

* Remove localization from validation error messages - decreases dependencies, adds a lot of obsolete constructors

* Reuse existing validation service + support custom error messages

* Fix merge errors

* Review comments

src/Umbraco.Cms.Api.Management/Controllers/ManagementApiControllerBase.cs

@@ -3,6 +3,7 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.Attributes;
+using Umbraco.Cms.Api.Common.Builders;
 using Umbraco.Cms.Api.Common.Filters;
 using Umbraco.Cms.Api.Common.Mvc.ActionResults;
 using Umbraco.Cms.Api.Management.DependencyInjection;
@@ -52,4 +53,8 @@ public abstract class ManagementApiControllerBase : Controller, IUmbracoFeature
     /// </remarks>
     // Duplicate code copied between Management API and Delivery API.
     protected IActionResult Forbidden() => new StatusCodeResult(StatusCodes.Status403Forbidden);
+
+    protected IActionResult OperationStatusResult<TEnum>(TEnum status, Func<ProblemDetailsBuilder, IActionResult> result)
+        where TEnum : Enum
+        => result(new ProblemDetailsBuilder().WithOperationStatus(status));
 }