feat: add api-based extension & external data tool & moderation backend (#1403)

Co-authored-by: takatost <takatost@gmail.com>

api/fields/api_based_extension_fields.py

@@ -0,0 +1,17 @@
+from flask_restful import fields
+
+from libs.helper import TimestampField
+
+
+class HiddenAPIKey(fields.Raw):
+    def output(self, key, obj):
+        return obj.api_key[:3] + '***' + obj.api_key[-3:]
+
+
+api_based_extension_fields = {
+    'id': fields.String,
+    'name': fields.String,
+    'api_endpoint': fields.String,
+    'api_key': HiddenAPIKey,
+    'created_at': TimestampField
+}