Changes to AssertWslSupported?

[chadjefferies]

Hello and thank you for this library!

Question on if you'd be open to changes to AssertWslSupported or more likely an entirely new method(s)? I feel it could be useful to know why WSL is not supported on a system, e.g. supported but not installed versus not supported at all?

Right now, I have to catch PlatformNotSupportedException to know if the system does not support WSL at all and a NotSupportedException to know if the system supports it but it is just not installed. It feels a little hacky to depend on internal implementation details like that (though if this was a design choice, that is good to know also and maybe catching those exceptions is an OK approach).

I'd be willing to create a PR to add a new method that returns some kind of status enum or possibly a set of new methods, one to detect if WSL is supported and one to check if WSL is installed.

Let me know your thoughts!