Add neighbor tracking system with LLDP integration

tendrils.go

@@ -9,11 +9,13 @@ import (
 
 type Tendrils struct {
 	activeInterfaces map[string]context.CancelFunc
+	neighbors        *Neighbors
 }
 
 func New() *Tendrils {
 	return &Tendrils{
 		activeInterfaces: map[string]context.CancelFunc{},
+		neighbors:        NewNeighbors(),
 	}
 }