feature: export the class GLTFParser

[rwjCxgsy]

Description

Sometime, Our databuffer is encrypted, so we need decrypt it before parse data buffer

[Mugen87]

It has already been discussed in #24764 whether GLTFParser should be exposed or not.

One conclusion was that GLTFParser was designed for internal use only. When it is exposed and thus part of the public API, it makes maintenance and refactoring more complicated.

The original issue of #24764 could be fixed by enhancing GLTFLoader.parse() so it was not necessary for the OP to use the parser on app level anymore.

Couldn't you decrypt your data before calling GLTFLoader.parse()?

[Mugen87]

Closing due to lack of feedback.