Improve reconnection

[DanielePalaia]

This PR improves the remote disconnection management, implementing a full automatic reconnection:

• We remove the disconnection callback management from the user and this is now done internally to the client. The connection keeps track of managements, publishers and consumers and when detect a disconnection reconnect the Connection with relative managements, publishers and consumers handlers.
• In case of streams we continue Consuming from the last saved Consumed offset
• BackOff Interval and max_retry are configurable parameters when reconnecting
• Example scenarios have been updated accordingly as well as README

[Gsantomaggio]

Instead of reconnect=True, I would use something like:
https://github.com/rabbitmq/rabbitmq-amqp-go-client/blob/d84c3d22de34b767e55e68e4f0fc54137b506924/pkg/rabbitmqamqp/amqp_connection_recovery.go#L8

RecoveryConfiguration struct {
	/*
		ActiveRecovery Define if the recovery is activated.
		If is not activated the connection will not try to createSender.
	*/
	ActiveRecovery bool

	/*
		BackOffReconnectInterval The time to wait before trying to createSender after a connection is closed.
		time will be increased exponentially with each attempt.
		Default is 5 seconds, each attempt will double the time.
		The minimum value is 1 second. Avoid setting a value low values since it can cause a high
		number of reconnection attempts.
	*/
	BackOffReconnectInterval time.Duration

	/*
		MaxReconnectAttempts The maximum number of reconnection attempts.
		Default is 5.
		The minimum value is 1.
	*/
	MaxReconnectAttempts int

to make the reconnections more configurable

[DanielePalaia]

@Gsantomaggio Hey, back to you for final review. I also implemented the backoff and max_attempt!

[Gsantomaggio]

There are just a couple ot things.

I would enable the recovery connection by default and also I would validate the values,

for example avoid the recconnetion time < 1 seconds

[DanielePalaia]

@Gsantomaggio Done! Back to you!