[Feature Request] Incremental OTA support

[osm0sis]

Well, I guess the only major thing left is this limitation: Incremental OTA(delta) payload is not supported. 😁

Here is a fork of the original Python payload_dumper supporting extracting the resulting images from a delta and an existing factory image, so perhaps their method could be adapted here: https://github.com/vm03/payload_dumper

[singhnsk]

I am also looking for support for incremental OTAs so that new full packages can be created.

[asheroto]

+1 for this feature

[davidlieberman]

+2 lol