Guarantee string is zero-terminated

Use new file I/O ABI

Use new file I/O ABI

Using new file I/O ABI

Using new file I/O ABI

Using new file I/O ABI

Using new file I/O ABI

Renamed functions for consistency:

 - StorageLoadValue() > LoadStorageValue()
 - StorageSaveValue() > SaveStorageValue()

Corrected issue on web compilation

* Update GLTF support to include loading color for albdeo (saved in the color value of the materialmap), support occlussion and emmission maps.. as well as some quality of life updates.

* clean up to use single image

Note that emscripten upstream branch implements the new asyncify implementation, expected to be faster than emterpreter one.

Some functions renamed