nextcloud from home:M0ses:nextcloud project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:M0ses:nextcloud/openSUSE_Tumbleweed/home:M0ses:nextcloud.repo
zypper refresh
zypper install nextcloud

需要 15.6 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:M0ses:nextcloud/15.6/home:M0ses:nextcloud.repo
zypper refresh
zypper install nextcloud

需要 15.5 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:M0ses:nextcloud/15.5/home:M0ses:nextcloud.repo
zypper refresh
zypper install nextcloud

需要 15.4 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:M0ses:nextcloud/15.4/home:M0ses:nextcloud.repo
zypper refresh
zypper install nextcloud

需要 openSUSE Leap 15.4 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:M0ses:nextcloud/openSUSE_Leap_15.4/home:M0ses:nextcloud.repo
zypper refresh
zypper install nextcloud