[rmodels] LoadModelAnimationsGLTF() computes poses interpolating between the anim duration and fixed 60 fps (GLTF_ANIMDELAY)

[raysan5]

It does not consider scenarios where animation is created at 24 fps or game does not run at 60 fps.

Model can already contain a fixed number of poses (keyframes) with a defined frame delay between each one (and also a expected interpolation between keyframes). That information is not considered at the moment.

[raysan5]

Related to this feature, a future improvement could be using float values for frame request to get interpolated poses between key-frame poses:

void UpdateModelAnimation(Model model, ModelAnimation anim, float frame);

frame could be a value between 0.0f and 1.0f to get interpolation.