Refactor ResultType enum location and naming for clarity

Move ResultType enum to ReC.API.Models/ResultType.cs and update its values from Header/Body to OnlyHeader/OnlyBody for improved clarity. Update all controller usages and documentation to reflect these changes.

src/ReC.API/Controllers/ResultViewController.cs

@@ -1,6 +1,7 @@
 using MediatR;
 using Microsoft.AspNetCore.Mvc;
 using ReC.API.Extensions;
+using ReC.API.Models;
 using ReC.Application.ResultViews.Queries;
 
 namespace ReC.API.Controllers;
@@ -32,8 +33,8 @@ public class ResultViewController(IMediator mediator, IConfiguration config) : C
 
         return resultType switch
         {
-            ResultType.Body => res.Body is null ? NotFound() : Ok(res.Body.JsonToDynamic()),
-            ResultType.Header => res.Header is null ? NotFound() : Ok(res.Header.JsonToDynamic()),
+            ResultType.OnlyBody => res.Body is null ? NotFound() : Ok(res.Body.JsonToDynamic()),
+            ResultType.OnlyHeader => res.Header is null ? NotFound() : Ok(res.Header.JsonToDynamic()),
             _ => Ok(res),
         };
     }