Role inclusion app

Async REST server, based on restinio for HTTP and nlohmann for JSON.
The client is based on restclient-cpp and the unit tests are written in gtest.

⚠️ Compiled and tested with VS 2022 17.5 /std:c++ latest

Requirements:

• Produce a list of all the Roles and their included roles.
• Include Role in another Role.
• Delete an included role from a role.
• Simulate the deletion of a role, in order to obtain a report of the roles that are affected by this deletion(they have this role included).
• When including / deleting a role to / from a role, a response about the status of the operation should be sent.