Default UI: Add Inline Regwall

Problem Statement

As a digital publisher, I experience a lack of user identity capture before content access, which results in missed opportunities to build a direct audience and personalize experiences.

User Story

1. As a site visitor, I want to register with my name, email, password before accessing articles, so that I can read content and receive future updates.

2. As a publisher, I want to present an inline registration wall, so that users are minimally interrupted while still required to identify themselves.

Definition of Done (DoD)

A feature is done when:

1. If displayPaywall is true, user is not authenticated, and type of paywall=inline, then display inline regwall that covers any part of the page wrapped with the following DIV ID=pelcro-inline-regwall

2. By default, email and password are required, but if enableNameFieldsInRegister is true in uiSettings, then name will be added

3. Title and subtitle of the inline regwall must be retrieved from the paywall registration title and subtitle fields

4. Primary and secondary colors of the regwall can be updated from the Pelcro platform