Implement ISystemReset interface in all plugins and ensure that a system reset does not result in YARP ports being closed and reopened

[traversaro]

See #206 (comment) .

[LoreMoretti]

It would be extremely useful that when the simulation gets reset the robot will start from the initial configuration set through the gzyarp::ConfigurationOverride plugin in the world file.

[traversaro]

It would be extremely useful that when the simulation gets reset the robot will start from the initial configuration set through the gzyarp::ConfigurationOverride plugin in the world file.

It does not? That's a bug that I think is independent from the one tracked here.

[traversaro]

It would be extremely useful that when the simulation gets reset the robot will start from the initial configuration set through the gzyarp::ConfigurationOverride plugin in the world file.

It does not? That's a bug that I think is independent from the one tracked here.

Follow up in #252 .