Generate target platform assembly attributes

[dsplaisted]

If the TargetPlatformIdentifier is set, the .NET SDK should generate assembly attributes for the target platform version, as well as the OSMinimumVersion. See this spec: https://github.com/dotnet/designs/blob/master/accepted/2020/minimum-os-version/minimum-os-version.md

We can also include in this setting the MinimumOSPlatform to the TargetPlatformVersion if it's not otherwise defined.

[wli3]

Partially blocked by dotnet/runtime#33331

I can write most of the code. But not to merge it

[wli3]

Rename MinimumPlatformVersion -> MinimumOSPlatform

[wli3]

Being blocked by dotnet/installer#7943

Review is done just need the runtime type to flow in