feat: introduce the extensions package

Author: honzajavorek

src/apify/scrapy/extensions/__init__.py

@@ -11,7 +11,7 @@
 from scrapy.http.headers import Headers
 from scrapy.responsetypes import responsetypes
 
-from ._async_thread import AsyncThread
+from .._async_thread import AsyncThread
 from apify import Configuration
 from apify.apify_storage_client import ApifyStorageClient
 from apify.storages import KeyValueStore

src/apify/scrapy/cache.py renamed to src/apify/scrapy/extensions/cache.py

@@ -1,6 +1,6 @@
 from time import time
 
-from apify.scrapy.cache import from_gzip, read_gzip_time, to_gzip
+from apify.scrapy.extensions.cache import from_gzip, read_gzip_time, to_gzip
 
 FIXTURE_DICT = {'name': 'Alice'}