Allow loading custom logos at startup #623
Description
Some games have replaced the Enterbrain logo at startup with custom ones.
It is actually a XYZ file embedded in the executable resources and therefore can be extracted.
It would be nice to show a custom logo after the EasyRPG one.
This is analogous to issue #605, scene_logo could look for a logo2.[xyz,png,bmp] file and load it.
Here are some custom ones:
El Libro:
Ahriman's Prophecy:
