cool-retro-term from X11:terminals project

对于 openSUSE Factory ARM，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/X11:terminals/openSUSE_Factory_ARM/X11:terminals.repo
zypper refresh
zypper install cool-retro-term

对于 openSUSE Factory，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/X11:terminals/openSUSE_Factory/X11:terminals.repo
zypper refresh
zypper install cool-retro-term

对于 16.0，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/X11:terminals/16.0/X11:terminals.repo
zypper refresh
zypper install cool-retro-term

对于 15.6，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/X11:terminals/15.6/X11:terminals.repo
zypper refresh
zypper install cool-retro-term

对于 SLE 12 SP5，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/X11:terminals/SLE_12_SP5/X11:terminals.repo
zypper refresh
zypper install cool-retro-term