* Add Paymenter blueprint and metadata
Introduces a new blueprint for Paymenter, including Docker Compose configuration, template variables, and an icon. Updates meta.json to register Paymenter with relevant metadata, description, links, and tags for billing and payment management.
* Add debug and proxy settings to Paymenter config
Set APP_DEBUG to false and TRUSTED_PROXIES to '*' in docker-compose.yml for improved security and proxy support. Also, specify path as '/' in template.toml to clarify application root.
