Kiwix/ZIM incremental updates/August Report

From mediawiki.org

As part of Gsoc(August) ,some bugs were removed from zmlib and zimpatch; zimdiff and zimpatch is being integrated into zimlib, and Kiwix integration is being done.

https://gerrit.wikimedia.org/r/#/c/79021/ https://gerrit.wikimedia.org/r/#/c/82449/