Add airports

.env.example

@@ -30,6 +30,14 @@ DB_DATABASE=flightsapi
 DB_USERNAME=root
 DB_PASSWORD=
 
+PRODUCTION_DB_CONNECTION=
+PRODUCTION_DB_HOST=
+PRODUCTION_DB_PORT=
+PRODUCTION_DB_DATABASE=
+PRODUCTION_DB_USERNAME=
+PRODUCTION_DB_PASSWORD=
+
+
 SESSION_DRIVER=database
 SESSION_LIFETIME=120
 SESSION_ENCRYPT=false