Dietpi_Drive_Manager add support for MergerFS

[paradix]

Creating a feature request

Is your feature request related to a problem? Please describe:

• Adding mergerfs entry to /etc/fstab gets deleted once you use Dietpi_Drive_Manager
• As example here is an entry to fstab: /mnt/disk* /mnt/storage fuse.mergerfs defaults,nonempty,allow_other,use_ino,cache.files=off,moveonenospc=true,category.create=mfs,dropcacheonclose=true,minfreespace=250G,fsname=mergerfs 0 0

Describe the solution you'd like:

• It would be enough if Dietpi_Drive_Manager would just leave the manual entry as is.
• Best if it would be able to handle and add entries for MergerFS

Describe alternatives you've considered:

• none

Additional context

• ...