clamav from home:mmeszaros project

对于 15.5，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/15.5/home:mmeszaros.repo
zypper refresh
zypper install clamav

对于 15.4，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/15.4/home:mmeszaros.repo
zypper refresh
zypper install clamav

对于 SLE 15 SP3，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP3/home:mmeszaros.repo
zypper refresh
zypper install clamav

对于 SLE 15 SP2，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP2/home:mmeszaros.repo
zypper refresh
zypper install clamav

对于 SLE 15 SP1，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP1/home:mmeszaros.repo
zypper refresh
zypper install clamav