added an interface to handle login events
added implementation for handling incoming login requests
moved class file to another package
moved class file to another package
removed interface
added BaseEventHandler class as a super class for all event handler
classes
added class to handle login events with methods to send login responses
to client either successs or failure
added code to handle incoming LoginRequest using reflectasm, each
incoming request is a new instance of LoginEventHandler
added JoinRoomEventHandler class with methods to send
JoinRoomSuccessResponse or JoinRoomFailureResponse
added code to handle incoming JoinRoomRequest