[DataAdapter] When image is updated delete previous image saved in storage. [Firebase - only]

[mihaivarga]

When image is updated delete previous image saved in storage. [Firebase - only]

DataAdapter - can implement a method called deleteUpload(item?.id, field)

Originally posted by @mihaivarga in #3 (comment)

[mihaivarga]

This can also update existing file path and not delete to be consistent, but most likely that can have browser cache issues.