Add cli option and vo_flag for disabling default directory first sorting

**is your feature request related to a problem? Please describe.**
a description of what the problem is, for example, `I'm always frustrated when [...]` or `Why is it not possible to [...]`
I have some directories I like to have sorted by date in their own volumes, but when folders are first it messes with sorting by date but changing in the UI changes it for all folders
**Describe the idea / solution you'd like**
a description of what you want to happen
to add an option to affect the default value of the ui folders first option
**Describe any alternatives you've considered**
a description of any alternative solutions or features you've considered

**Additional context**
add any other context or screenshots about the feature request here