Add an option to turn off autoLaunch in dev command

[albertodeago]

Is your feature request related to a problem? Please describe.

I really would like to have an option to be able to turn off the autoLaunch behaviour of the dev command.
I understand why by default it's turned on, but I think that it would be a nice addition to add a way to turn it off if needed.

Describe the solution you'd like

I would like to add (I can already open a PR if accepted) an option called --autoLaunch on the dev command. By default it would be true so that there would be no breaking change, but if provided a false value, the browser won't be auto opened.

Describe alternatives you've considered

I know that this can already be done via toml file, but I think it would be a nice addition to the CLI itself

Can you submit a pull request?

Yes.

[erezrokah]

Hi @albertodeago! Thank you for opening the issue. This is available via BROWSER=none ntl dev, due to the underlying library we use to open the browser.

We can probably document it better, so maybe adding it under https://cli.netlify.com/commands/dev or https://cli.netlify.com/netlify-dev#usage (or both) will make it more visible.

[albertodeago]

thanks @erezrokah for the quick response.
Oh wow I didn't find this info anywhere so I think it would be a nice addition in the docs, do you want me to submit a pr on the dev docs?

[erezrokah]

A PR would be very helpful, thanks @albertodeago!

[albertodeago]

I'll do that