If you can paint the sheen textures in Substance Painter or Blender first, and export them separately, then I think you could attach the textures to the glTF file using KHR_materials_sheen in the Gestaltor tool.
Similarly — but with code — you could attach the textures in glTF Transform using scripts similar to these examples: Writing volumetric refraction in glTF 2.0 and the MaterialsSheen class.