Add endpoint for filtered OutRes results by actionId

Introduced a new `HttpGet` endpoint `fake/{actionId}` in the
`OutResController` to support fetching OutRes data filtered
by `actionId` and an optional `resultType` parameter.

Added logic to handle different `resultType` values (`Full`,
`Header`, `Body`) and return the appropriate part of the
result. Updated response `ContentType` for non-`Full` results
and ensured null-safe handling for `Body` and `Header`.

Included a new `ResultType` enum and added necessary `using`
directives for the new functionality.

src/ReC.API/Controllers/OutResController.cs

@@ -1,6 +1,9 @@
 using MediatR;
 using Microsoft.AspNetCore.Mvc;
+using ReC.API.Models;
 using ReC.Application.OutResults.Queries;
+using System.Net.Mime;
+using System.Text.Json;
 
 namespace ReC.API.Controllers;
 
@@ -16,4 +19,31 @@ public class OutResController(IMediator mediator, IConfiguration config) : Contr
     {
         ProfileId = config.GetFakeProfileId()
     }));
+
+    [HttpGet("fake/{actionId}")]
+    public async Task<IActionResult> Get([FromRoute] long actionId, ResultType resultType = ResultType.Full)
+    {
+        var res = (await mediator.Send(new ReadOutResQuery()
+        {
+            ProfileId = config.GetFakeProfileId(),
+            ActionId = actionId
+        })).First();
+
+        if (resultType is not ResultType.Full)
+            HttpContext.Response.ContentType = MediaTypeNames.Application.Json;
+
+        return resultType switch
+        {
+            ResultType.Body => res.Body is null ? Ok(new object { }) : Ok(JsonSerializer.Deserialize<dynamic>(res.Body)),
+            ResultType.Header => res.Header is null ? Ok(new object { }) : Ok(JsonSerializer.Deserialize<dynamic>(res.Header)),
+            _ => Ok(res),
+        };
+    }
+}
+
+public enum ResultType
+{
+    Full,
+    Header,
+    Body
 }