feat: add artisan command to create new account

[codemonkeysoftware]

This adds an Account:Create command to artisan so that accounts can be created on an instance without opening public registration.

Resolves #4744

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[CLAassistant]

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[asbiin]

Good idea! Thank you.
See my review

[asbiin]

Great

[djaiss]

Good, thank you!

[codemonkeysoftware]

I'm fairly certain the suddenly failing tests are coincidental to my adding a new test, but maybe I'm wrong?

[asbiin]

@lpdyck no it's not. I'm trying to resolve it in #4763

[asbiin]

Thank you @lpdyck !

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