cpp from home:gcomes.obs:deno_leap_15.6 project

需要 15.6 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:gcomes.obs:deno_leap_15.6/15.6/home:gcomes.obs:deno_leap_15.6.repo
zypper refresh
zypper install cpp