Is your feature request related to a problem? Please describe.
I'm trying to replicate telegram famous gradient symbol background.

Describe the solution you'd like
A clear and concise description of what you want to happen.
Additional configuration for a chatBackground, not only just image, but also fit and repeat properties

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
May be add other parameter like pattern that already includes configuration from main solution

Additional context
Add any other context or screenshots about the feature request here.
It's really hard to provide an image that will fit perfectly on all the devices, so i would really appreciate this feature to exist in the package

P.S. You make a really great package, i love it!