Module notifications 

Structs

PushNotificationRequest

Struct representing a push notification request

PushSubscriptionRequest

Struct representing a push subscription request

send_notification

POST /notifications/send/{url_id} - Send notifications to a subscription

subscribe

POST /notifications/subscribe/{url_id} - Subscribe to notifications

unsubscribe

DELETE /subscriptions/unsubscribe/{url_id} - Unsubscribe a player from push notifications