Moved backup cmdlet to Backup folder

Author: dragonfly91

src/ResourceManager/RecoveryServices.Backup/Cmdlets/Item/BackupAzureRmRecoveryServicesItem.cs

@@ -83,7 +83,7 @@
     <Compile Include="Cmdlets\Container\UnregisterAzureRmBackupManagementServer.cs" />
     <Compile Include="Cmdlets\Container\UnregisterAzureRmRecoveryServicesBackupContainer.cs" />
     <Compile Include="Cmdlets\Item\DisableAzureRmRecoveryServicesProtection.cs" />
-    <Compile Include="Cmdlets\Item\BackupAzureRmRecoveryServicesItem.cs" />
+    <Compile Include="Cmdlets\Backup\BackupAzureRmRecoveryServicesItem.cs" />
     <Compile Include="Cmdlets\Item\EnableAzureRmRecoveryServicesProtection.cs" />
     <Compile Include="Cmdlets\Item\GetAzureRmRecoveryServicesItem.cs" />
     <Compile Include="Cmdlets\Jobs\GetAzureRmRecoveryServicesJob.cs" />
@@ -104,9 +104,7 @@
     <Compile Include="RecoveryServicesBackupCmdletBase.cs" />
     <Compile Include="CmdletParameterHelpMessages.cs" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Cmdlets\Backup\" />
-  </ItemGroup>
+  <ItemGroup />
   <ItemGroup>
     <ProjectReference Include="..\..\Common\Commands.Common.Authentication\Commands.Common.Authentication.csproj">
       <Project>{d3804b64-c0d3-48f8-82ec-1f632f833c9e}</Project>