FbxSkeleton should create empty skins with all of the bones.

[lyuma]

See here for a description:
godotengine/godot#60854 (comment)
and here:
godotengine/godot#62275 (comment)

FBX knows that the nodes are part of a skeleton because they have an FbxSkeleton attached. Hence, FBX2glTF should detect this case and create a dummy glTF skin like discussed in this blender gltf io issue here:
KhronosGroup/glTF-Blender-IO#822

(This functionality that allows you to convert in Blender is therefore actually quite new, in Blender 3.2 )

[fire]

This is still wanted.