Update per package compliance, add script for xcodeproj update (#419)

* Update nuget.config per package compliance
* Add script to update xcode project

Author: MIchaelMainer

.azure-pipelines/generation-templates/objc.yml

@@ -5,3 +5,8 @@ steps:
     BuildConfiguration: $(buildConfiguration)
     OutputFullPath: $(typewriterDirectory)/output
     RepoModelsDir: $(Build.SourcesDirectory)/msgraph-sdk-objc-models/GeneratedModels/
+- pwsh: |
+      gem install --user-install xcodeproj
+      ruby ./add_generated_models.rb | Write-Host
+  displayName: 'Add new files to project'
+  workingDirectory: $(Build.SourcesDirectory)/msgraph-sdk-objc-models/

.nuget/nuget.config

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
+    <clear />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
   </packageSources>
 </configuration>