Remove FakeRequest class and ResultType enum

Deleted FakeRequest.cs and ResultType.cs, removing the FakeRequest class (with Body and Header properties) and the ResultType enum (Full, OnlyHeader, OnlyBody). These types are no longer needed in the codebase.

src/ReC.API/Models/FakeRequest.cs

@@ -1,8 +0,0 @@
-namespace ReC.API.Models;
-
-public class FakeRequest
-{
-    public Dictionary<string, object>? Body { get; init; }
-
-    public Dictionary<string, object>? Header { get; init; }
-}

src/ReC.API/Models/ResultType.cs

@@ -1,17 +0,0 @@
-namespace ReC.API.Models;
-
-public enum ResultType
-{
-    /// <summary>
-    /// Return the full result object.
-    /// </summary>
-    Full,
-    /// <summary>
-    /// Return only the header part of the result.
-    /// </summary>
-    OnlyHeader,
-    /// <summary>
-    /// Return only the body part of the result.
-    /// </summary>
-    OnlyBody
-}