Refactor namespace and project structure

Replaced `DigitalData.MessagingService.Client.DependencyInjection`
namespace with `DigitalData.MessagingService.Client` across the
codebase to simplify and streamline the project structure.

Removed unused `Microsoft.Extensions.Logging` and `System`
dependencies from `EmailSender.cs`. Updated project references
in `DigitalData.MessagingService.Tests.csproj` to reflect the
namespace and project restructuring. Adjusted `using` directives
in test files to align with the new namespace.

src/presentation/DigitalData.MessagingService.Client/EmailSender.cs

@@ -2,10 +2,8 @@
 using DigitalData.MessagingService.Publisher.Abstraction;
 using DigitalData.MessagingService.RabbitMQ;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using System;
 
-namespace DigitalData.MessagingService.Client.DependencyInjection;
+namespace DigitalData.MessagingService.Client;
 
 /// <summary>
 /// Provides a static, self-contained client for sending emails via RabbitMQ

src/presentation/DigitalData.MessagingService.Client/OnReconnect.cs

@@ -1,4 +1,4 @@
-namespace DigitalData.MessagingService.Client.DependencyInjection;
+namespace DigitalData.MessagingService.Client;
 
 /// <summary>
 /// Defines the behavior when <see cref="EmailSender.ConnectRabbitMq"/> is called

tests/DigitalData.MessagingService.Tests/DigitalData.MessagingService.Tests.csproj

@@ -23,7 +23,7 @@
   <ItemGroup>
     <ProjectReference Include="..\..\src\infrastructure\DigitalData.MessagingService.Publisher\DigitalData.MessagingService.Publisher.csproj" />
     <ProjectReference Include="..\..\src\infrastructure\DigitalData.MessagingService.RabbitMQ\DigitalData.MessagingService.RabbitMQ.csproj" />
-    <ProjectReference Include="..\..\src\presentation\DigitalData.MessagingService.Client.DependencyInjection\DigitalData.MessagingService.Client.DependencyInjection.csproj" />
+    <ProjectReference Include="..\..\src\presentation\DigitalData.MessagingService.Client\DigitalData.MessagingService.Client.csproj" />
   </ItemGroup>
 
   <ItemGroup>

tests/DigitalData.MessagingService.Tests/Integration/EmailSenderTests.cs

@@ -1,4 +1,4 @@
-using DigitalData.MessagingService.Client.DependencyInjection;
+using DigitalData.MessagingService.Client;
 using DigitalData.MessagingService.Publisher.Abstraction;
 
 namespace DigitalData.MessagingService.Tests.Integration;

tests/DigitalData.MessagingService.Tests/Integration/EmailSenderUrlOverloadTests.cs

@@ -1,4 +1,4 @@
-using DigitalData.MessagingService.Client.DependencyInjection;
+using DigitalData.MessagingService.Client;
 using DigitalData.MessagingService.Publisher.Abstraction;
 
 namespace DigitalData.MessagingService.Tests.Integration;