Allow creating .NET 7.0 Functions

[alexweininger]

This will allow users to create .NET 7.0 Functions. However, if they have .NET 6.0 and .NET 7.0 installed locally, then we will still default to .NET 6.0.

Fixes #758

[bwateratmsft]

Depending which you merge first, this will definitely yield a merge conflict with #760.

[nturinski]

This will allow users to create .NET 7.0 Functions. However, if they have .NET 6.0 and .NET 7.0 installed locally, then we will still default to .NET 6.0.

Fixes #758

Does this mean the user never gets prompted for which .NET they want to use? And we'll only use .NET 7 if they have it installed?

If that's the case, I think we would want to change this behavior. I believe the Func CLI lets you create .NET 7 triggers with a .NET 6 runtime.

[alexweininger]

Does this mean the user never gets prompted for which .NET they want to use? And we'll only use .NET 7 if they have it installed?

Yes.

If that's the case, I think we would want to change this behavior. I believe the Func CLI lets you create .NET 7 triggers with a .NET 6 runtime.

I agree, but wanted to at least enable it for now. Letting users pick will be a larger change (and need to happen in Functions). I will create a new issue for that.

#761