Small chunks - Githubissues

[x] set up an entity for a new sorted multidraw settings elements renderer to put in ui
[x] set up a vertices buffer setup that will store new stuff for an elements renderer
[x] set up some kind of thing that generates an elements renderer for sub chunks
[x] just put a single triangle in vertices buffer
[x] put a color on the thing for the sole vertex attribute, vertices are in a buffer!
[x] set up an indices ebo
[x] just put triangle indices in there
[x] create an elements renderer for the thing through the mesh bs
[x] draw it with stubbed out sorted multidraw system
[x] set up vertex shader gen to get index some how to pull current vertex out from buffer ok
[x] draw a triangle

[x] stub out some code to generate enough vertices to generate a cube, to be expanded later for a full sub chunk
[x] render cube instead of triangle
[x] use block data to generate the voxel type
[x] add block id to shader gen
[x] add texture atlas to shader gen
[x] render the single voxel as per the voxel data
[x] support air voxels
[ ] add ability to update ebo
[x] be able to regenerate a single voxel without crashing or restarting

[x] fix slow sub chunk experience
[ ] add launch option to use sub chunks
[ ] add sub chunk load job
[ ] conditionally use load job or sub chunk load job
[ ] sub chunk load job should use progress tracking
[ ] block editing, lighting etc needs to make use sub chunk positions cross chunk traverser
[ ] conitionally know on block edit to trigger sub chunk updates if that makes sense on block edits
[ ] complete ability to update ebo objective from phase 2 to support block editing
[ ] updating buffer also so the updated ebo makes sense
[ ] update frustum culling to support sub chunks
[ ] add a game chunk triangle counter

btipling / blockens