Add Settings window to Agent UI

Agent systray UI has been extended with
a setting window that allows configuring 
management URL, admin URL and 
supports pre-shared key.
While for the Netbird managed version 
the Settings are not necessary, it helps
to properly configure the self-hosted version.

client/proto/daemon_grpc.pb.go

@@ -26,6 +26,8 @@ type DaemonServiceClient interface {
 	Status(ctx context.Context, in *StatusRequest, opts ...grpc.CallOption) (*StatusResponse, error)
 	// Down engine work in the daemon.
 	Down(ctx context.Context, in *DownRequest, opts ...grpc.CallOption) (*DownResponse, error)
+	// GetConfig of the daemon.
+	GetConfig(ctx context.Context, in *GetConfigRequest, opts ...grpc.CallOption) (*GetConfigResponse, error)
 }
 
 type daemonServiceClient struct {
@@ -72,6 +74,15 @@ func (c *daemonServiceClient) Down(ctx context.Context, in *DownRequest, opts ..
 	return out, nil
 }
 
+func (c *daemonServiceClient) GetConfig(ctx context.Context, in *GetConfigRequest, opts ...grpc.CallOption) (*GetConfigResponse, error) {
+	out := new(GetConfigResponse)
+	err := c.cc.Invoke(ctx, "/daemon.DaemonService/GetConfig", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DaemonServiceServer is the server API for DaemonService service.
 // All implementations must embed UnimplementedDaemonServiceServer
 // for forward compatibility
@@ -84,6 +95,8 @@ type DaemonServiceServer interface {
 	Status(context.Context, *StatusRequest) (*StatusResponse, error)
 	// Down engine work in the daemon.
 	Down(context.Context, *DownRequest) (*DownResponse, error)
+	// GetConfig of the daemon.
+	GetConfig(context.Context, *GetConfigRequest) (*GetConfigResponse, error)
 	mustEmbedUnimplementedDaemonServiceServer()
 }
 
@@ -103,6 +116,9 @@ func (UnimplementedDaemonServiceServer) Status(context.Context, *StatusRequest)
 func (UnimplementedDaemonServiceServer) Down(context.Context, *DownRequest) (*DownResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Down not implemented")
 }
+func (UnimplementedDaemonServiceServer) GetConfig(context.Context, *GetConfigRequest) (*GetConfigResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetConfig not implemented")
+}
 func (UnimplementedDaemonServiceServer) mustEmbedUnimplementedDaemonServiceServer() {}
 
 // UnsafeDaemonServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -188,6 +204,24 @@ func _DaemonService_Down_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _DaemonService_GetConfig_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetConfigRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DaemonServiceServer).GetConfig(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/daemon.DaemonService/GetConfig",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DaemonServiceServer).GetConfig(ctx, req.(*GetConfigRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // DaemonService_ServiceDesc is the grpc.ServiceDesc for DaemonService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -211,6 +245,10 @@ var DaemonService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Down",
 			Handler:    _DaemonService_Down_Handler,
 		},
+		{
+			MethodName: "GetConfig",
+			Handler:    _DaemonService_GetConfig_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "daemon.proto",