Create ServiceDetail struct type

pkg/database/timetable.go

@@ -35,6 +35,15 @@ type Service struct { // Consider including catering, train class etc. here too.
 	Stops             []Stop    `json:"stops,omitempty"`
 }
 
+// Contains service detail booleans
+type ServiceDetail struct {
+	FirstClass bool `json:"firstClass"`
+	Catering   bool `json:"catering"`
+	Sleeper    bool `json:"sleeper"`
+	Vstp       bool `json:"vstp"`
+	Guard      bool `json:"guard"`
+}
+
 type DeleteQuery struct {
 	TrainUid          string    `json:"trainUid"`
 	ScheduleStartDate time.Time `json:"scheduleStartDate"`