Add ARGON algorithm support (Argon2i) [#3351874]

Problem/Motivation

Use PASSWORD_ARGON2I (ARGON) algorithm instead of PHP_DEFAULT one.
while related task won't be merged. (which will allow to set which algorithm to use in config).

Steps to reproduce

Proposed resolution

update everywhere in module PASSWORD_DEFAULT to PASSWORD_ARGON2I

Remaining tasks

-none-

User interface changes

-none-

API changes

-none-

Data model changes

-none-

Issue fork php_password-3351874

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3351874-add-argon-algorithm changes, plain diff MR !4
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