Fix: Haxe 5 compatibility (bump Haxe version from 4.3.6 to 4.3.7 + remove the old hxcpp compile cache when rebuilding Linux ARM ndlls)

[MRK2009]

For some reason, It looks like Haxe 5 broke lime because some of the methods got removed from MainLoop class (including progress from the Thread class).
So I had to fix it by using a wrapper of MainLoop class and use loopOnce to make it work.
I tested it on C++ targets and it looks like it works fine(except it giving me warnings still)
But I'm not sure how to fix the errors for Flash and AIR targets though.

[MRK2009]

Maybe I'll rework this pr someday, but rn I'll try make another where I remove the old hxcpp compile cache and bumping the haxe version 4.3.6 to 4.3.7.

[player-03]

Thanks for pointing out that this also occurs in Promise.hx, I've added that fix to #2007. That's where we're tracking the event loop issue, so check it out and let us know if there's anything it's missing.

[MRK2009]

Alright, I'll look into it.