Some form of incremental backup

[Y] I have searched open and closed issues for duplicates Issue Description Background I use signal for most messaging, and most are not needing expiry dates. Specifically, having a long history is beneficial. This history includes many images. The result of this is that my Signal backup file is now 2.57GB in size, with each file having a different name. Problem It is now very slow to backup. It impacts available storage (or the number of backups that can be kept). Copying backup files to clo...