Can you explain what GitPaid is and provide an overview of how it functions? It can be likened to Siri shortcuts but with more intelligence. Users have the ability to add individuals to their Twitter Circle if they have paid for or subscribed to a membership. This membership also grants them access to Notion templates and GitHub repositories. Implementing a paywall to content is a simple process with GitPaid. Although they are currently focused on integrating with GitHub, they have plans to enable more integrations in the future.