musescore from multimedia:apps project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/multimedia:apps/openSUSE_Tumbleweed/multimedia:apps.repo
zypper refresh
zypper install musescore

需要 openSUSE Slowroll ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/multimedia:apps/openSUSE_Slowroll/multimedia:apps.repo
zypper refresh
zypper install musescore

需要 15.6 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/multimedia:apps/15.6/multimedia:apps.repo
zypper refresh
zypper install musescore

需要 15.5 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/multimedia:apps/15.5/multimedia:apps.repo
zypper refresh
zypper install musescore

需要 openSUSE Backports SLE-15-SP5 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/multimedia:apps/openSUSE_Backports_SLE-15-SP5/multimedia:apps.repo
zypper refresh
zypper install musescore