[Enhancement] Introduce App UI settings

[alexshadowolex]

The current App UI is very static and does not have a lot of responsivity, aside from changing to full screen and back.

Following responsive settings would be neat for the App:

• Adjustable font size
• Switch between dark mode, light mode and "system settings"
• Minor adjustability to App Size (width, height), not full responsivity

This is what I have in mind at this moment, maybe there are more possible settings for easy responsivity.

The end goal would be full responsivity and more settings. But at this moment, I don't have any more wishes and I know responsivity is a pain in the ass so I won't put it into this issue :D

[1recyclebin1]

I need to look more into bullet 1 and 2 if I want to add them, bullet 3 will hopefully be available in the next release 🙂‍↕️

[1recyclebin1]

#47 bullet 2 if you want to give it a try

I'll tackle bullet 1 at some point

[alexshadowolex]

Looks good :)