Add net8.0 target

[WeihanLi]

Description

Add net8.0 target

.NET 8 preview 1 published, we need .NET 8.0 support somewhere

Fixes # (issue)

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• [x] I have performed a self-review of my code
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] I have made corresponding changes to the documentation
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] New and existing unit tests pass locally with my changes
• [ ] I did test corresponding changes on Windows
• [x] I did test corresponding changes on Linux
• [ ] I did test corresponding changes on Mac

[alirezanet]

Hi @WeihanLi, Thank you for the PR 💐👌, but isn't it a bit early to support .net8 now? since it is still a preview? I would rather merge this PR after an official release. what do you think?

[WeihanLi]

@alirezanet thanks, yeah, it's a little earlier indeed, is it acceptable for a preview release? so that it could be used by those early adopters, and maybe we could prepare for a stable release when .NET 8 RC or GA version released

[alirezanet]

Hi @WeihanLi, For those who need early access to .net8 I also released a preview version of husky.net, 0.6.0-Preview1. Thank you for your contribution 🎉