* allow zig 0.11.0 and 0.12.0dev to build raylib

* update comment

For some reason, the equivalent requested context (WebGL 2.0) is not provided, despite being properly requested.

* Fix gestures for SDL

* Review the gesture handling for SDL

* Review 2

- Now triangulated  meshes are properly supported
 - Simplified code to consider issue situation
 - Removed mesh split per material, just define separate mesh if multiple materials are required

for rendering meshes with points.
similar to wire mode.
(NOTE) they still backface cull, so disable that if you want to show the entire mesh.

At this moment, physac is an external unmaintained library, better move out of raylib.

* Move rcore.h content inside rcore.c

* Remove extern CoreData CORE

temporary quickfix for issue #3473