CodeGen from PR 13215 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.DeviceUpdate to add version preview/2020-03-01-preview (Azure#13215)

* New Readme Config File

* New Go Language Readme Config File

* New Azure AZ Readme Config File

* New Azure CLI Readme Config File

* New Typescript Language Readme Config File

* New Python Language Readme Config File

* New C# Language Readme Config File

* New AzureResourceSchema Readme Config File

* New Swagger Spec File

* New Swagger Example Spec File

* Release of Device Update for IoT Hub control plane specification.

* Fixing prettier issues.

* Updating control plane swagger

* Update deviceupdate.json

* Update deviceupdate.json

* Update deviceupdate.json

* Update deviceupdate.json

* add the multiapi section

* Update Accounts_Delete.json

* Update Instances_Delete.json

Co-authored-by: David Pokluda <david.pokluda@microsoft.com>
Co-authored-by: Alexander Batishchev <abatishchev@gmail.com>
Co-authored-by: ArcturusZhang <dapzhang@microsoft.com>