Refactor HTTP client name constant usage

Replaced the old HttpClientName constant in Constants.cs with a new Http.ClientName in the ReC.Application.Common.Constants namespace. Updated all references and using directives accordingly to improve code organization and maintainability.

src/ReC.Application/Common/Constants.cs

@@ -1,6 +0,0 @@
-namespace ReC.Application.Common;
-
-public static class Constants
-{
-    public static readonly string HttpClientName = "HttpClient-" + Guid.NewGuid().ToString();
-}

src/ReC.Application/Common/Constants/Http.cs

@@ -0,0 +1,6 @@
+namespace ReC.Application.Common.Constants;
+
+public static class Http
+{
+    public static readonly string ClientName = "HttpClient-" + Guid.NewGuid().ToString();
+}

src/ReC.Application/DependencyInjection.cs

@@ -2,8 +2,8 @@
 using MediatR;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
-using ReC.Application.Common;
 using ReC.Application.Common.Behaviors;
+using ReC.Application.Common.Constants;
 using ReC.Application.Common.Options;
 using System.Reflection;
 
@@ -36,7 +36,7 @@ public static class DependencyInjection
             cfg.LicenseKey = configOpt.LuckyPennySoftwareLicenseKey;
         });
 
-        services.AddHttpClient(Constants.HttpClientName)
+        services.AddHttpClient(Http.ClientName)
             .ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
             {
                 UseDefaultCredentials = false

src/ReC.Application/RecActions/Commands/InvokeRecActionCommand.cs

@@ -1,6 +1,7 @@
 using MediatR;
 using Microsoft.Extensions.Configuration;
 using ReC.Application.Common;
+using ReC.Application.Common.Constants;
 using ReC.Application.Common.Dto;
 using ReC.Application.Common.Exceptions;
 using ReC.Application.OutResults.Commands;
@@ -31,7 +32,7 @@ public class InvokeRecActionCommandHandler(
     {
         var action = request.Action;
 
-        using var http = clientFactory.CreateClient(Constants.HttpClientName);
+        using var http = clientFactory.CreateClient(Http.ClientName);
 
         if (action.RestType is null)
             throw new DataIntegrityException(