This API will allow apps to change global style mode and accent.
Global style mode can be
* Automatic (wallpaper)
* Automatic (day of time)
* Light
* Dark
Accent colors are defined in the caller application that will have
to pass the package name.
It's possible for apps to pass a Bitmap and get a suggestion
of a global style + accent color that can be applied.
Restrictions:
* Only one accent can be enabled at time.
* We're not limiting this to system apps, but we're marking
this as dangerous permissions so apps will have to require
it at runtime to the user.
Change-Id: I921e8758c3ae093a88e897899612830258c97f8d
Signed-off-by: Joey <joey@lineageos.org>