APY-8 : Implement X-Filter as external server

Made the necessary updates on components and started with the
gateway.
APY-8 : Implement X-Filter as external server

Made a preliminary access service to configure gateways.
APY-8 : Implement X-Filter as external server

Made th first gateways for access.
APY-8 : Implement X-Filter as external server

Started filter handling for gateway and also file
system notifier.