Feature: Add resilience parttern configuration to endpoints calls

[TalkySafe143]

This PR comes with:

• Circuit Breaker implementation for HTTP and gRPC calls.
• File config new validations.

This first version of the circuit breaker use a simple policy to states changes (CLOSED -> OPEN -> HALF OPEN).
The following new configurations can be added to the input file:

"endpoints" : [
   "name": "...",
   ...,
   "resilience_patterns":  {
         "circuit_breaker" : {
              "timeout": 2,
              "retry_timer": 10
           }
     },
     ...
     "network_complexity": {
            ....
            "called_services": [
              {
                "service": "service2",
                "endpoint": "endpoint1",
                "active_circuit_breaker": true,
                ....
              }
            ]
       }
]

Retry timer stands for how many seconds the Circuit Breaker should wait until make a retry to the called service. The documentation of the circuit breaker was added in generator-parameters.sh.

The objective of the contribution is to represent better the patterns implemented in production workloads.