This PR replaces our current custom mouse cursors (defined in
wm_cursors.cc using bitmaps and masks that we edit with a python
program) with SVG sources that are rasterized at the exact size when
needed. For Windows this would also replace the 29 platform-specific
"cur" files, although this PR does not actually remove those. For Linux
this creates the same kind of cursor as now (1bpp XBitMap) but at a
better size.
Pull Request: https://projects.blender.org/blender/blender/pulls/140990