Add support for textures reshaped by PCAE

[soulweaver91]

soulweaver91/project-carrot-pcae#1

Implementing this will improve compatibility of Project Carrot. (Right now, PC crashes in SFML code on a virtual machine for instance.)

[soulweaver91]

Maximum texture size to be used will be set to 4096×4096. According to http://feedback.wildfiregames.com/report/opengl/feature/GL_MAX_TEXTURE_SIZE, it is supported by all but the very weakest several generations old graphics cards, so very few people should be affected.

Remote Desktop (reported 1024×1024) will not be supported. Virtual machine support depends, the crash there doesn't to seem to be directly caused by this as it reported correct values and still fell over regardless, unless it was lying about its capabilities.

[soulweaver91]

Support added to PCAE in soulweaver91/project-carrot-pcae@209f7d4