Community effort for Metal support

[Schr3da]

Hi,

started using it a while back ago (few years). It is a great project and as technology moves quickly I wanted to know if someone is interested in bringing this nice library to the next level by supporting metal.

best regards
Schr3da

[galad87]

ANGLE has a Metal backend. Apple is using it for WebGL2, maybe it's enough for this project too.