Feature Request: Ability to change season background with Image Asset Directory

[Alex1331xela]

I use the image asset directory feature to manage all my posters, backgrounds and title cards, and it works perfectly. However, there seems to be no way to set a season's background (or if there is, I am unable to find it on the wiki page).

The way I'd imagine this working is adding the season background image to the correct asset folder, named according to whether asset_folders is true or false.

Example:

Image Type	asset_folders: true	asset_folders: false
Season background	assets/ASSET_NAME/Season##_background.ext	assets/ASSET_NAME_Season##_background.ext

[meisnate12]

added to develop for release in v1.13.0