Add http auth to static warm

[moritzlang]

Problem:
Staging systems are often behind a HTTP basic authentication. Calling the current static warm command on a site behind HTTP basic authentication (e.g. from a CI job) produces a "401 Authorization Required" error.

Solution:
This pull request adds the possibility to pass the authentication credentials via the parameters --u (HTTP authentication user) and --p (HTTP authentication password) to the static warm command.

[what-the-diff]

• Added the --user and --password options to the command signature.
• Updated client configuration with authentication credentials if provided, otherwise null is passed in as auth option value (to avoid passing an empty array).

[edalzell]

Oh I like this one, nicely done

[arthurperton]

Nice one! The convention for command line arguments is to use full words with double dashes, and short (often single letter) with single dashes. So instead of --u and --p I'd use either -u and -p or for example --user and --pass or even --username and --password.

[moritzlang]

Thanks @arthurperton for pointing this out! I adjusted the arguments in order to comply with the convention.

Other commands in this repository generally use full words for the arguments, therefore I also used this form here.
For the naming of the arguments I followed the well-known wget command which uses --user and --password.

[arthurperton]

Nice 👌🏻

[jasonvarga]

You could add shortcuts if you want.

https://laravel.com/docs/9.x/artisan#option-shortcuts

e.g.

{--u|user=}
{--p|password=}