mozc from home:ftake:mozc project

For 16.0 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:ftake:mozc/16.0/home:ftake:mozc.repo
zypper refresh
zypper install mozc

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:ftake:mozc/15.6/home:ftake:mozc.repo
zypper refresh
zypper install mozc