Try to use the CLI password for logins

[DL6ER]

What does this implement/fix?

This PR accompanies PR pi-hole/FTL#1999

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Related issue or feature (if applicable): N/A

Pull request in docs with documentation (if applicable): N/A

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5. I have squashed any insignificant commits. (git rebase)

Checklist:

• The code change is tested and works locally.
• I based my code and PRs against the repositories developmental branch.
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[PromoFaux]

Tested with and without webserver.api.cli_pw enabled

disabled = prompts for password and then works
enabled = works without password prompt

👍

Happy to approve once suggestions resolved

[yubiuser]

Could you please rebase on latest PADD_FTLv6.
I noticed that the status codes in DeleteSession do not match them in #247 and the current documentation https://ftl.pi-hole.net/development-v6/docs/#delete-/auth

[DL6ER]

Sure, this PR would only merge the diff, so it doesn't matter but I rebased nonetheless.