Added StatsReceiver interface

protocol/protocol.go

@@ -35,6 +35,11 @@ type PacketReceiver interface {
 	RawPackets() <-chan *Packet
 }
 
+type StatsReceiver interface {
+	// Stats returns a channel that receives stats updates.
+	Stats() <-chan map[string]any
+}
+
 type PacketTransmitter interface {
 	radio.Device