[fr-api] Added fr-api entrypoint structure

Main: Now restructured as a tokio main due to the async management required for the request.
Arguments: Now the paths are optionals and a new flag --fr-api can be chosen with the flight code number after it.
Fr-api: For now just doing a request in loop. The token need to be changed in order to make the request.
Cargo: Dependencies added to make work the fr-api.

For now the api will take the flight light telemetry.
In future this will be used to create fake packets