feat: create heartbeat processing system

hub/internal/service/connection_manager/interface.go

@@ -0,0 +1,19 @@
+package connection_manager
+
+import (
+	"context"
+
+	pb "github.com/lorsanstand/HomeOps-Hub/api/gen/homeops"
+	domainHub "github.com/lorsanstand/HomeOps-Hub/hub/internal/domain"
+)
+
+type streamConn interface {
+	Send(request *pb.ServerCommandRequest, err error)
+	Recv() (*pb.AgentEvent, error)
+	Context() context.Context
+	Close() error
+}
+
+type heartbeatStore interface {
+	CreateHeartbeat(ctx context.Context, heartbeat domainHub.CreateHeartbeatModel) error
+}