[Feature request] Separate `branding` property for android 12

[OutdatedGuy]

Is your feature request related to a problem? Please describe.

As android12 natively supports branding image, it would be best if there is a separate property for android12 branding. This might also solve issue #399

Describe the solution you'd like

Have a separately used branding and branding_dark properties under android_12. If this is not specified, then don't use any branding for android12

Additional context

Here is a great article for android 12 splash screen.

Branding sections (open on chrome)