`gleam publish` should be able to use a long-lived hex api key to auth publishing to hex.

[Skenvy]

At the moment the gleam publish command requires HEXPM_USER and HEXPM_PASS to authorise publishing. It would be nice to not require the user password to need to be used for this, instead making available a preferred option of a hex api key ~ HEXPM_API_KEY ~ so that users can manage their own long lived API keys if they prefer.

[Skenvy]

I would like to start working on this. -- an initial cut https://github.com/gleam-lang/gleam/compare/main...Skenvy:gleam:hexpm_api_key?expand=1

[lpil]

Fab! Thank you!

[TomBinford]

Should this be closed now?

[lpil]

Thank you