utils: Introduce google diff match patch
utils: Introduce google diff match patch

It comes from https://github.com/lqc/google-diff-match-patch

bloodybear/yona,bloodybear/yona,bloodybear/yona,doortts/fork-yobi,bloodybear/yona,yona-projects/yona,doortts/fork-yobi,yona-projects/yona,doortts/fork-yobi,yona-projects/yona,doortts/fork-yobi,yona-projects/yona