open-toontown/resources not compatible with RTM

[TerjeRusska]

open-toontown/resources contain texture assets that are of .png type while RTM either tries to load .jpg or a combination of .jpg and .rgb textures.

:gobj(error): Texture::read() - couldn't read: phase_3/maps/eyes.png
:gobj(error): Unable to find texture "phase_3/maps/eyes.png" on model-path /c/Users/Terje/Desktop/Toontown/OpenLevelEditor;/c/Panda3D-1.11.0-py39-x64/etc/..;/c/Panda3D-1.11.0-py39-x64/etc/../models

Switching texture loader paths to .png (and removing .rgb) Fixes the issue but I suspect these texture paths were setup by following resources from other TT servers.