Cool Tool Holder remix

I really liked the [Tool Holder](https://www.thingiverse.com/thing:3417586) by [LethalTeaspoon](https://www.thingiverse.com/LethalTeaspoon), but I found supports hard to remove from the dead-end voids, so I remixed it with the following changes to make printing easier:

1) Split the top and the bottom, both can be printed without supports in the natural orientation, then it's glue time.
2) Print and glue as many bottom sections as needed, with drawers, they stack.
3) The drawer guides are not really necessary and sometimes the drawer gets wedged if I insert it not exactly straight in, so I removed them,
4) The drawer handle is redesigned so it is printed together with the drawer. If stacking multiple drawers, it is convenient to not have all handles aligned (so there is more space under each handle), I added a two-handle version with offset handles.