docs: Update PayPerView, Playback Access Rules, Subscription, and Technical Playback Access documentation to clarify rental options and access rules
Refactor code structure for improved readability and maintainability
feat: Enhance plugin notes and add new documentation for Marketplace login and playback access rules - Updated the "FansSubscriptions" and "PayPalYPT" entries in plugin-notes.json to include detailed flow descriptions. - Added Marketplace-Login.md to document the sign-in process for the AVideo Marketplace, including provider configurations and session handling. - Created Playback-Access-Rules.md to outline mandatory playback access rules, setup instructions, and verification processes. - Introduced Technical-Marketplace-Login.md detailing the technical aspects of Marketplace login and session isolation, including provider configuration and session bootstrap. - Added Technical-Playback-Access.md to explain the implementation of mandatory playback access, integration points, and validation processes. - Created Technical-Social-Login.md to describe the technical details of social login account binding, including persistence and legacy account handling.