Feature/android route notification (#868)

Add new feature to notify the user when new client route has arrived.
Refactor the initial route handling. I move every route logic into the route
manager package.

* Add notification management for client rules
* Export the route notification for Android
* Compare the notification based on network range instead of id.

client/internal/routemanager/mock.go

@@ -1,7 +1,10 @@
 package routemanager
 
 import (
+	"context"
 	"fmt"
+
+	"github.com/netbirdio/netbird/iface"
 	"github.com/netbirdio/netbird/route"
 )
 
@@ -11,6 +14,11 @@ type MockManager struct {
 	StopFunc         func()
 }
 
+// InitialClientRoutesNetworks mock implementation of InitialClientRoutesNetworks from Manager interface
+func (m *MockManager) InitialClientRoutesNetworks() []string {
+	return nil
+}
+
 // UpdateRoutes mock implementation of UpdateRoutes from Manager interface
 func (m *MockManager) UpdateRoutes(updateSerial uint64, newRoutes []*route.Route) error {
 	if m.UpdateRoutesFunc != nil {
@@ -19,6 +27,15 @@ func (m *MockManager) UpdateRoutes(updateSerial uint64, newRoutes []*route.Route
 	return fmt.Errorf("method UpdateRoutes is not implemented")
 }
 
+// Start mock implementation of Start from Manager interface
+func (m *MockManager) Start(ctx context.Context, iface *iface.WGIface) {
+}
+
+// SetRouteChangeListener mock implementation of SetRouteChangeListener from Manager interface
+func (m *MockManager) SetRouteChangeListener(listener RouteListener) {
+
+}
+
 // Stop mock implementation of Stop from Manager interface
 func (m *MockManager) Stop() {
 	if m.StopFunc != nil {