Feature Request: Proper Preferences Management for macOS

[TomBoehm]

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

At the moment LocalSend stores preferences in
~/Library/Containers/org.localsend.localsendApp/Data/Library/Preferences/org.localsend.localsendApp.plist
or
~/Library/Preferences/org.localsend.localsendApp.plist
depending if installed via AppStore or DMG

Both are in the user home => per user
I have 25 iMacs where different users log in with their Azure credentials, so I want to set preferencess per device like:
flutter.ls_alias
iMac01

Describe the solution you'd like

Usually /Library/Preferences/org.localsend.localsendApp.plist (Top Level Library) would be the place to achieve that.
With a behaviour:
If a is defined in top level /Library/Preferences => use that
If the is not defined => let the user decide and store it in ~/Library/Preferences

Describe alternatives you've considered

Instead of placing a file in /Library/Preferences/org.localsend.localsendApp.plist those settings could be deployed as MDM profile

Additional context

No response