Gridfinity ES15 Screwdriver + FX-888D‘s Tips Holders

This is a re-made based on [Zack's original template](https://thangs.com/designer/ZackFreedman/3d-model/Gridfinity%20iFixit%20Mako%20%2B%20ES121%20Screwdriver%20Holders-60744) and has been improved with the following modifications, taking into account [MachoThick's design](https://www.printables.com/model/222143): A reserved charging hole for ES15. An added Hakko FX-888D soldering iron tip hole (∅7.3mm × 15mm). According to [Desaster's suggestion](https://www.printables.com/model/269834-gri