Sockets for tool

I worked quickly, so the file is not very clean.
I added comments in the customization window.
I added the possibility to choose the position of the partitions in each locker (box). Please let me know of any comments or suggestions for changes. I might prepare a modular storage box for small tools (screwdrivers or keys). It is essential to read the comments of the previous authors to fully understand the usgaes of this socket (margins for the sockets of parts). I chose dimensions in millimeters randomly. There are certainly small bugs to be fixed.