Migrate VS extension to AsyncPackage

[wjk]

Per this documentation, the VS IDE extension should be migrated to use AsyncPackage and background autoloading. I tried to do this myself, but it would not compile (and I suspect that even if it did, I would introduce subtle threading bugs). If this could be addressed, I would appreciate it, because VS2019 nags me at launch about using the deprecated synchronous load mechanism. Thanks!

[dannyvv]

Hi @wjk,
Agree we need to update. For now it should work fine when ignoring the warning.
We don't have anything immediate scheduled, so marking it as "Up for grabs" if anybody wants to contributed.
Thanks, Danny

[rongjiecomputer]

@wjk What did you do to make the VS IDE extension run in VS 2019? I installed it, dismiss the performance warning, but C# Intellisense still doesn't seem to work.

[wjk]

@rongjiecomputer In all honesty, I didn't actually try that. I removed the extension right after I saw the performance warning. IMHO, BuildXL is a fascinating curiosity, but nowhere near ready for use on real projects (at least, outside of Microsoft). Sorry I wasn't able to help!

[almiliMSFT]

Addressed in PR #516