Celeron N5095 doesn't support AVX instructions -> running BGFX samples crash with default config

[slyben]

Hello,
as stated in the title, Celeron N5095 doesn't support AVX instructions, and by default when building bgfx on Windows with Visual Studio, it uses /arch:AVX, so when running a sample with AVX, it crashes pretty quickly...

If I comment the line 506 (default flag "EnableAVX" for vs*) in toolchain.lua, then genie generates projects that build and run smoothly.

I didn't wrote a pull request, as I don't know what's the best solution here, as most of the time on other intel CPUs (i3, i5, i7, i9, etc...), I do want AVX :) and also I have a workaround so I'm not blocked either...
What do you think?