Upgrade SDK detection

[Noggog]

Right now it just leans on dotnet --version, but this command might return a valid version string if just the runtime is installed, but not an SDK? Need to reproduce/test to make sure. If so, we'll want to upgrade to looking at dotnet --info and parsing that, perhaps

[BryanAldrich]

Probably not related, but if i run Synthesis through Vortex, it says there is no SDK installed.
I have 6, 7, 8.0.206, 8.0.400 and 9-preview installed atm.

[Noggog]

It'll say no SDK installed if it's unable to run dotnet --version and get anything back. This card is about the reverse, where it's a false positive.

Feel free to stop by the discord and upload your logs, though. At the end of the day, Vortex is in charge of letting synthesis do what it needs to do as if it was running normally -> but with mods present. If the behavior is different when running in Vortex vs from Desktop, it's probably something to tweak on Vortex's side