Add nativeaot C# tests

[danmoseley]

could we merge #397 ?

(note, I haven't tested it in a year, but if you want to merge it and need me to test it, let me know)

would be great to see numbers for these.

[hanabi1224]

Hi @danmoseley sorry for my slow response to the PR. I will need to find some time to fix CI first to unblock all PRs.

[danmoseley]

@hanabi1224 no problem, happy to work together and appreciative of your work on the site. LMK if you need anything.

[hanabi1224]

Hi @danmoseley regarding the PR

• native AOT has been enabled for most of the problems,
• net10-preview does not compile because Newtonsoft.JSON is no longer supported
• multithreaded solutions for regex-redux are disabled for all languages

[danmoseley]

thanks! should I close the PR then?