agrep from server:irc project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/server:irc/openSUSE_Tumbleweed/server:irc.repo
zypper refresh
zypper install agrep

需要 15.6 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/server:irc/15.6/server:irc.repo
zypper refresh
zypper install agrep

需要 15.5 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/server:irc/15.5/server:irc.repo
zypper refresh
zypper install agrep