Use a hook to integrate sharing password verification

[DeepDiver1975]

@schiesbn did I catch all password changing and setting operations?

@karlitschek @cmonteroluque @MTRichards this is the core part of the password policy integration

#17827 is required as well for better user feedback in case the password verification fails.

[karlitschek]

looks good 👍 please backport as discussed.

[MTRichards]

Excellent. This would allow an app to be built to implement the custom policy, right?

@CaptionF just fyi, for your reference - a password policy enforcement hook, step one.

[schiessle]

btw, while you are on it, please also fix the wrong description of the setPassword() method. Thanks!

beside that it looks good 👍

[ghost]

🚀 Test PASSed.🚀

[scrutinizer-notifier]

A new inspection was created.

[ghost]

🚀 Test PASSed.🚀

[rullzer]

I assume we do not have a way to force only 1 listener to a hook? Else we need to watch out for user error if multiple listeners try to verify the password.

Otherwise looking good! 👍