feat: add default blacklist cache related settings

- SJWT_CACHE_NAME: selects the Django cache alias
- CACHE_BLACKLISTED_REFRESH_TOKENS and CACHE_BLACKLISTED_FAMILIES: toggle caching
- TTL and key prefix settings added for each blacklist type

Author: juanbailon

rest_framework_simplejwt/settings.py

@@ -28,6 +28,13 @@
     "JSON_ENCODER": None,
     "JWK_URL": None,
     "LEEWAY": 0,
+    "SJWT_CACHE_NAME": "default",
+    "CACHE_BLACKLISTED_REFRESH_TOKENS": False,
+    "CACHE_BLACKLISTED_FAMILIES": False,
+    "CACHE_TTL_BLACKLISTED_REFRESH_TOKENS": 3600,  # time is seconds
+    "CACHE_TTL_BLACKLISTED_FAMILIES": 3600,  # time in seconds
+    "CACHE_KEY_PREFIX_BLACKLISTED_REFRESH_TOKENS": "sjwt_brt",
+    "CACHE_KEY_PREFIX_BLACKLISTED_FAMILIES": "sjwt_btf",
     "AUTH_HEADER_TYPES": ("Bearer",),
     "AUTH_HEADER_NAME": "HTTP_AUTHORIZATION",
     "USER_ID_FIELD": "id",