feat: update conn in hub

internal/hub/rpc/server.go

@@ -0,0 +1,21 @@
+package rpc
+
+import (
+	"context"
+
+	pb "github.com/lorsanstand/HomeOps-Hub/api/gen/homeops"
+	"google.golang.org/protobuf/types/known/emptypb"
+)
+
+type Server struct {
+	pb.UnimplementedHubServer
+}
+
+func NewServer() *Server {
+	return &Server{}
+}
+
+func (s *Server) Ping(ctx context.Context, _ *emptypb.Empty) (*pb.PongResponse, error) {
+	return &pb.PongResponse{Pong: "Pong"}, nil
+
+}