How to Install a Matcap through code?

I made an Addon for some basic operators, but I also want it to install my custom matcaps. I know there’s a directory where you can place your matcaps to make them show up in blender, but the idea is doing this through the Addon.

Is there some API command for installing matcaps from a path or would I need to copy paste the files ith python?

Also, what would I need in the unregister() function to remove/uninstall them when the Addon is disabled?