AA to AAA adapater

This is a simple shim to allow AAA batteries to fit in slots designed for AA's. I made this while creating a gridfinity drawer set and didn't want to commit to AAA only units. The height matched the unit I was working with at the time, but may not be flush with all - it's a trivial detail in my opinion but feel free to modify at will. Essentially any height will acheive the effect of not having a AAA wobble in a slot initially intended for a AA. The tolerances should work for both disposable and rechargeable batteries.(Model is in PLA Basic)