[FEATURE REQ] Create Azure SignalR service instances

[mruf]

Is your feature request related to a problem? Please describe. I would like to programmatically create an Azure SignalR service instance.

Describe the solution you'd like I would like to programmatically create an Azure SignalR service instance.

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• [X] Description Added
• [X] Expected solution specified

[weidongxu-microsoft]

Maybe you can use this one. https://www.nuget.org/packages/Microsoft.Azure.Management.SignalR/