Visual Studio for Mac v2.8.0.17-vsm17.3

What's Changed

[VSMac] Switch macOS build to net6 by @nosami in https://github.com/VsVim/VsVim/pull/2963
Push MS.VS.Threading into VimCore by @jaredpar in https://github.com/VsVim/VsVim/pull/2973
Initial Actions work by @jaredpar in https://github.com/VsVim/VsVim/pull/2977
Publish steps by @jaredpar in https://github.com/VsVim/VsVim/pull/2978
Mac OS Publishing by @jaredpar in https://github.com/VsVim/VsVim/pull/2979
Merge in GitHub Action support by @jaredpar in https://github.com/VsVim/VsVim/pull/2980
Update README Build Badge by @jaredpar in https://github.com/VsVim/VsVim/pull/2981
VS Mac 17.3 by @nosami in https://github.com/VsVim/VsVim/pull/2987
Remove Visual Studio 2017 support from main branch by @jaredpar in https://github.com/VsVim/VsVim/pull/2998
Update chinese version of README by @huang825172 in https://github.com/VsVim/VsVim/pull/2983
Bump macOS on CI to 11 as 10.15 is deprecated by @nosami in https://github.com/VsVim/VsVim/pull/3003
[VSMac] Fix split windows and tab movement commands by @nosami in https://github.com/VsVim/VsVim/pull/3008

@huang825172 made their first contribution in https://github.com/VsVim/VsVim/pull/2983

Full Changelog: https://github.com/VsVim/VsVim/compare/v2.8.0.15-vsm17.0...v2.8.0.17-vsm17.3