add comments about autogen'd files

backend/src/connector/client.rs

@@ -8,7 +8,11 @@
 //!     This file was modified in order to get rid of the "swagger" crate, which brings
 //!     a lot of unnecessary dependencies (for example, openssl, which can cause problems
 //!     when creating docker images, even if we use only the http client). In addition,
-//!     some refactoring was done to reduce the code size (from 2k-ish LOC to 500).
+//!     some refactoring was done in order to:
+//!         1. Reduce the code size (from 2k-ish LOC to 500).
+//!         2. Provide new functionality, e.g. adding authorization (and other) headers for
+//!            new requests
+//!         3. Unify error handling with `error_stack`
 //!
 
 #![allow(