[CI] Rewrite without lix/vshaxe-build, run on different OS and haxe versions

[kLabz]

We're currently getting errors on all platforms (but different errors!) with nightlies since HaxeFoundation/haxe#11477, and apparently windows has been broken for a while..

Still not sure what's happening exactly there..

Notes:

• Also getting a random mac timeout on tests from time to time
• Windows CI is quite bad at haxelib installs; cache helps there but might need to re-run CI when updating dependencies
• Update haxelib dependencies with haxelib state save install.hxml
• This might break workflow for people building vshaxe with vshaxe-build?

[AlexHaxe]

I don't mind getting rid of vshaxe-build.

dropping lix is a step backwards for me. not only does it break my workflow, we also lose the ability to lock local compilation to a specific Haxe version.

[kLabz]

I don't mind keeping lix and non-lix in sync myself (and adding a CI check) but I do want a non-lix workflow to be available too

[AlexHaxe]

I'm fine with that.

I'll try to remember updating both when adding or upgrading dependencies. if that can be ensured via a CI check that would definitely help keeping them in sync.