Better label dynamic theme in options

[ghost]

Describe the feature you want to implement:

In the color scheme picker, it isn't very clear that the last color on the list represents the MaterialYou/Dynamic theme for Android 13. Maybe it'd be better to add button next to cancel/ok labeled as "Dynamic Theme", which pressing enables the feature (or a separate toggle outside the color picker).

Why do you think this will improve everyone's usage of Auxio?

More clarity in the settings menu.

Due Diligence:

• [x] I have read the Contribution Guidelines.
• [x] I have read the Accepted Additions and Requests document.
• [x] I have checked for this feature in the FAQ.

[OxygenCobalt]

I guess that's reasonable. I only thew it into the accent picker since it's the easiest option technically.

[OxygenCobalt]

Actually, I feel like adding this would add too many bugs for it to be reasonable. It's already default on Android 12 onwards.