feat: add Magic Login Modes (link or code with multiple formats)

[datamweb]

Description
This update makes the Magic-Login system configurable without breaking backward compatibility. Now developers can choose between:

1. A activation link(clickable)
2. A verification code — in 6-numeric, 6-alpha, 6-alnum or 6-oneof format.

This flexibility lets you adapt authentication to your app’s needs, compliance rules, or user-experience preferences.

For the code-based flow, a new dedicated view is introduced to keep things clean and avoid conflicts with existing or customized views, ensuring backwards compatibility.

close : #1293
see : #1261
Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[sanchawebo]

One minor thing: You have multiple calls to resolveMode() in the loginAction() method, which generates a new token everytime. This could lead to confusion about its usage in the future.
Otherwise looks good to me and would fix my issue #1261

[datamweb]

@sanchawebo Thank you for your helpful review!