add notification and send notification

core/apps/notifications/utils/send_notification.py

@@ -0,0 +1,16 @@
+import requests
+
+def send_notification(token, title, body, data=None):
+    message = {
+        "to": token,
+        "sound": "default",
+        "title": title,
+        "body": body,
+        "data": data or {},
+    }
+    response = requests.post(
+        "https://exp.host/--/api/v2/push/send",
+        json=message,
+        headers={"Content-Type": "application/json"}
+    )
+    return response.json()