add install script to automatically download binary into /usr/local/bin/code-server

[nhooyr]

[robertpeteuil]

You might be able to leverage this installation script that I created for Terraform - to create a script for installing code-server

It can provide a base as it has a lot of error checks, parameter options, and logic for:

• finds the latest release from the GitHub API
• determines OS and architecture and creates the download URL
• downloading, extracting and copying to binary directory

[kylecarbs]

Fixed with sshcode 🎊