[IMPROVEMENT] Import Settings via command-line

[FlorianSuppan]

Please confirm these before moving forward.

• I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
• This improvement refers to an existing feature. If you want to suggest a new feature, please use this template.
• This improvement is not a bug. If you want to report a bug, please use this template.

Describe the improvement

On every start of UniGetUI import the settings from a specified json-file.

Describe how this improvement could help users

This would be useful if you want to deploy (changes of) settings to multiple machines, which all have access to a shared network drive, cloud drive, ... One would just have to export the desired settings from one machine to a .json file on a network drive, which is automatically imported by all other machines at application start.

[marticliment]

Wouldn't this be better implemented with some kind of control panel, or allowing UniGetUI to subscribe to some local server that would manage settings as well as available managers and sources?

[Mchar7]

I would find the loading of a settings JSON as a command line switch to be useful at least. I feel like the current command line option for program bundle could be changed to require a preceding switch, and then there could be another switch for a settings file.

This would make UniGetUI more convenient for use in a portable context. (I currently need to launch UniGetUI, go to the settings view, press Import Settings, find & select the file buried amongst all the program files, and restart UniGetUI.) Perhaps there could be a default settings JSON filename, so that if that file exists in the program root it is loaded automatically unless UniGetUI is launched with the settings file argument.