Populate and keep updated a set of protected ETS tables representing:

• the visible MAV systems
• the most recently received messages for each MAV and message type
• the most recently received set of parameters for each MAV

Using ETS tables allows clients to perform read only API operations directly on the tables, preventing this GenServer from becoming a bottleneck.

Use XMAVLink.Util.Context when utility state should be scoped to a specific router, dialect, or ETS table namespace.