Add PostgreSQL database option and more booking flow functionalities

internal/booking.go

@@ -1,11 +1,13 @@
 package internal
 
-import "git.coopgo.io/coopgo-platform/carpool-service/interoperability/ocss"
+import (
+	"git.coopgo.io/coopgo-platform/carpool-service/interoperability/ocss"
+	"github.com/paulmach/orb/geojson"
+)
 
 type Booking struct {
-	ID                string   `bson:"_id"`
-	Roles             []string // At least one of ["driver", "passenger"]
-	BookingDefinition ocss.Booking
-	DriverJourney     *PlannedJourney
-	PassengerJourney  *PlannedJourney
+	ocss.Booking `bson:",inline"`
+
+	DriverRoute    *geojson.FeatureCollection `bson:"driver_route,omitempty"`
+	PassengerRoute *geojson.FeatureCollection `bson:"passenger_route,omitempty"`
 }