Finally add black theme support to Auxio. This is abit of a janky
implementation since I had to add an extra set of accents, but it
shouldn't be as big of a problem after the styles refactoring.
Support for black android components is not implemented yet, but
will be eventually.
Collapse amber and yellow into a single accent [Yellow], remove the neutral accent due to UI isuses, and darken light-mode accents across the board to be more visible.
Update layouts to not assign a primary color through the tools namespace anymore, also bring back the light theme, which apparently disappeared at some point.
