Add support for `npm i -g mterm`

[daretodave]

We did claim the mterm namespace on npm -
https://www.npmjs.com/package/mterm

Todo:

• make a project that has a postinstall step of installing the mterm binary for the right os
• add mterm to open the install path
• add mterm . to open the install path on the desired directory
• add mterm upgrade to install the latest mterm (even though this is is already a thing on boot, formalize it)
• add mterm -v
• eventually complete the mterm cli that replaces bash, powershell, pwsh, etc (this is a much later thing, other items first)