feat(engine): basic input tracking

[ultraviolet-jordan]

• Implements the EVENT_TRACKING packet.
• Input tracking implemented similar to the client.
• Tracks if the player is actually doing any inputs on the client. Forces logout if the player is not sending any user inputs (such as spoofing the afk timer, or deleting packets in the client).
• Renamed processPlayerSetup to processClientsIn.
• Offsets the tracking interval for randomness.