some file snuck in here, main.qml somehow/somewhen..
mv qml assets, remove "assets" dir, mv qml pngs to textures/gui

among other things..
reorganize a lot more, lots better dir tree structure

move shaders to /shaders as well
no buildsystem fixes for a while though..
rm useless shaders
cmake fixes to correspond with dir restructure..should catch most errors
fix all build errors now
camera slipped out of commit
start using qstandardpaths, install .json files from textures/
more cmake install fixes
more shader fixes
add threaded render loop env var to launcher (unused as of yet)

should be helpful for tests
fix block texture paths and sky renderer paths
game runs now, just qml is missing a few things
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