Antivirus engine status / Configuration validator

[Enygma2002]

After configuring the antivirus application's default engine and the engine's connection parameters, it would be nice to have a validation that the configuration is correct and possibly some feedback from the configured engine that it's in good health (i.e. responding).

Since most such AV engines work on a client-server architecture, it would be a good idea to add a PING command that each AV engine integrations could implement to validate the connection with the AV engine's server.