Feature/search domain for android (#1256)

Support search domain on Android

- pass list of search domains to Android SDK
- throw notification in case of search domain changes

client/internal/routemanager/notifier.go

@@ -4,31 +4,26 @@ import (
 	"sort"
 	"sync"
 
+	"github.com/netbirdio/netbird/client/internal/listener"
 	"github.com/netbirdio/netbird/route"
 )
 
-// RouteListener is a callback interface for mobile system
-type RouteListener interface {
-	// OnNewRouteSetting invoke when new route setting has been arrived
-	OnNewRouteSetting()
-}
-
 type notifier struct {
 	initialRouteRangers []string
 	routeRangers        []string
 
-	routeListener    RouteListener
-	routeListenerMux sync.Mutex
+	listener    listener.NetworkChangeListener
+	listenerMux sync.Mutex
 }
 
 func newNotifier() *notifier {
 	return &notifier{}
 }
 
-func (n *notifier) setListener(listener RouteListener) {
-	n.routeListenerMux.Lock()
-	defer n.routeListenerMux.Unlock()
-	n.routeListener = listener
+func (n *notifier) setListener(listener listener.NetworkChangeListener) {
+	n.listenerMux.Lock()
+	defer n.listenerMux.Unlock()
+	n.listener = listener
 }
 
 func (n *notifier) setInitialClientRoutes(clientRoutes []*route.Route) {
@@ -62,15 +57,15 @@ func (n *notifier) onNewRoutes(idMap map[string][]*route.Route) {
 }
 
 func (n *notifier) notify() {
-	n.routeListenerMux.Lock()
-	defer n.routeListenerMux.Unlock()
-	if n.routeListener == nil {
+	n.listenerMux.Lock()
+	defer n.listenerMux.Unlock()
+	if n.listener == nil {
 		return
 	}
 
-	go func(l RouteListener) {
-		l.OnNewRouteSetting()
-	}(n.routeListener)
+	go func(l listener.NetworkChangeListener) {
+		l.OnNetworkChanged()
+	}(n.listener)
 }
 
 func (n *notifier) hasDiff(a []string, b []string) bool {