fix: import context so it can be properly exported (#150)

import context so it can be properly exported

nitric/resources/__init__.py

@@ -19,7 +19,7 @@
 """Nitric Python SDK API Documentation. See: https://nitric.io/docs?lang=python for full framework documentation."""
 
 from nitric.resources.apis import Api, api, ApiOptions, ApiDetails, JwtSecurityDefinition, oidc_rule
-from nitric.resources.buckets import Bucket, bucket
+from nitric.resources.buckets import Bucket, bucket, BucketNotificationContext, FileNotificationContext
 from nitric.resources.kv import KeyValueStoreRef, kv
 from nitric.resources.schedules import ScheduleServer, schedule
 from nitric.resources.secrets import Secret, secret