request: Nushell Support

[MichaelMBrown]

Requesting support for nushell and other shell environments. I used Codex to ask "I want to add nushell support to this repo, currently it does not check paths for shells like nu. when looking for codex.". After building, app had no seemingly glaring issues. Let me know if y'all are okay with that!

[shivamhwp]

i'll report it to the internal issues and tell the team.
mostly currently zsh works best. fish also can sometimes problems.
so you can use zsh in the meantime !!