mixed reality csharp sdk for 2021-01-01 API (#18448)

* mixed reality charp sdk

* update csproj

* Add missing files

eng/mgmt/mgmtmetadata/mixedreality_resource-manager.txt

@@ -3,12 +3,12 @@ AutoRest installed successfully.
 Commencing code generation
 Generating CSharp code
 Executing AutoRest command
-cmd.exe /c autorest.cmd https://github.com/Azure/azure-rest-api-specs/blob/master/specification/mixedreality/resource-manager/readme.md --csharp --version=v2 --reflect-api-versions --csharp-sdks-folder=D:\Git\GitHub\my\azure-sdk-for-net\sdk
-2020-05-19 06:34:08 UTC
+cmd.exe /c autorest.cmd https://github.com/Azure/azure-rest-api-specs/blob/master/specification/mixedreality/resource-manager/readme.md --csharp --version=v2 --reflect-api-versions --csharp-sdks-folder=C:\repos\azure-sdk-for-net\sdk
+2021-02-04 22:31:02 UTC
 Azure-rest-api-specs repository information
 GitHub fork: Azure
 Branch:      master
-Commit:      fd1212399155ecb17199b24434d780a42a6e5ec6
+Commit:      32b7b579549d417d5a799b4d0527f5ad9dd73fc3
 AutoRest information
 Requested version: v2
 Bootstrapper version:    [email protected]

sdk/mixedreality/Microsoft.Azure.Management.MixedReality/AzSdk.RP.props

@@ -1,7 +1,7 @@
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!--This file and it's contents are updated at build time moving or editing might result in build failure. Take due deligence while editing this file-->
   <PropertyGroup>
-    <AzureApiTag>MixedReality_2020-04-06-preview;MixedReality_2020-05-01;</AzureApiTag>
+    <AzureApiTag>MixedReality_2020-04-06-preview;MixedReality_2020-05-01;MixedReality_2021-01-01</AzureApiTag>
     <PackageTags>$(PackageTags);$(CommonTags);$(AzureApiTag);</PackageTags>
   </PropertyGroup>
 </Project>