Return the updated list when setting a list background
Add swagger docs for unsplash methods
Add unsplash info to search results
Fix misspell
Fix lint
Add rights check for setting and getting backgrounds
Show unsplash information when loading a single list
Make application id for pingbacks configurable
Remove old backgrounds when setting a new one
Return 404 if the list does not have a background
Implement getting list backgrounds
Implement actually setting a photo from unsplash as list background
go mod tidy
Add migration for background file id
Roughly implement setting a list background from unsplash
Implement saving a background
Add migration for unsplash photo table
Add unsplash search
Fix parsing page param
Fix parsing page param
Fix background config
Add unsplash wrapper library
Add enabled background providers to info endpoint
Add config options for backgrounds
Add unsplash background provider
Add routing handler for backgrounds
Add basic background provider interface
Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/568
