NCP: Change path for ncdata instead of moving it

Similar to Change path of datadir + dbdir from "USBdrive" to drive label I want to change the path to ncdata without moving any data.

This is necessary if one started with using “USBdrive” as path to ncdata but needs to use a second USB stick some time later. In that case one has to change the path to the USB stick’s lable but the data must not be moved - otherwise nextcloud breaks.

Would it make sense to offer an option in the “move datadir” module to just apply the changed path without moving any data to the new path destination?