Install script & self upgrade

[zztkm]

task

• [x] install script
• [ ] self update: vss self update

参考

• https://deno.land/x/[email protected]/install.sh?source=
• https://deno.land/x/[email protected]/install.ps1?source
• self update
  • https://zenn.dev/kamina_zzz/articles/e9d68da8a88cf2