✨(backend) create ai endpoint

We created 2 new action endpoints on the document
to perform AI operations:
- POST /api/v1.0/documents/{uuid}/ai-transform
- POST /api/v1.0/documents/{uuid}/ai-translate

src/backend/impress/settings.py

@@ -454,6 +454,20 @@ class Base(Configuration):
     ALLOW_LOGOUT_GET_METHOD = values.BooleanValue(
         default=True, environ_name="ALLOW_LOGOUT_GET_METHOD", environ_prefix=None
     )
+    AI_API_KEY = values.Value(None, environ_name="AI_API_KEY", environ_prefix=None)
+    AI_BASE_URL = values.Value(None, environ_name="AI_BASE_URL", environ_prefix=None)
+    AI_MODEL = values.Value(None, environ_name="AI_MODEL", environ_prefix=None)
+
+    AI_DOCUMENT_RATE_THROTTLE_RATES = {
+        "minute": 5,
+        "hour": 100,
+        "day": 500,
+    }
+    AI_USER_RATE_THROTTLE_RATES = {
+        "minute": 3,
+        "hour": 50,
+        "day": 200,
+    }
 
     USER_OIDC_FIELDS_TO_FULLNAME = values.ListValue(
         default=["first_name", "last_name"],