[REQUEST] Add back support for FBX exporting (or built in conversion)

[LengaJenga]

Use case

Easier workflow for other software that does not natively support GLTF/GLB (Unity, as the biggest example)

Solution

Add the option to export FBX in the settings. Or at least for it to convert the gltf/glb automatically.

Alternatives

The alternative is converting each file manually in 3D software such as Blender. This is cumbersome but doable.