Solids now convert into geometry properly

[snake-biscuits]

This new system can be added to vmf_tool/solid_tools.py to convert .vmf to .obj (and potential as a base for editing .vmfs in blender)

solid.__init__ should be a function that calls solid.__init__ instead since it makes more sense for solid.__init__ to be called when creating a brush, rather than when loading from a .vmf

Also, the rendering system needs a total refactor, adding a new shader & vertex format and draw calls are a pain all the OpenGL in ui/viewport.py ACTUALLY being in ops/render.py is confusing Furthermore: GL state changes in viewport.paintGL appear to be causing crashes GL initialization is spread across multiple files GL does not support asynchronously updating buffers while drawing afaik

There is still a lot to be done but it's certainly better than the previous system

[snake-biscuits]

There are some rounding errors which cause a lot of errors when loading displacement heavy maps Snapping verts to grid when generating geo would fix this