min3rd/open-erp-backend

AI Summary: The task is to implement a robust Role-Based Access Control (RBAC) system for the `open-erp-backend` using NestJS guards and custom decorators. This system must support both global and tenant-specific permissions, allowing API endpoints to be marked as public or requiring specific permissions/roles. Key requirements include ease of use, testability, and comprehensive logging/auditing for access decisions.