feat(api-nodes): network client v2: async ops, cancellation, downloads, refactor (#10390)

* feat(api-nodes): implement new API client for V3 nodes

* feat(api-nodes): implement new API client for V3 nodes

* feat(api-nodes): implement new API client for V3 nodes

* converted WAN nodes to use new client; polishing

* fix(auth): do not leak authentification for the absolute urls

* convert BFL API nodes to use new API client; remove deprecated BFL nodes

* converted Google Veo nodes

* fix(Veo3.1 model): take into account "generate_audio" parameter

pyproject.toml

@@ -50,6 +50,8 @@ messages_control.disable = [
   "too-many-branches",
   "too-many-locals",
   "too-many-arguments",
+  "too-many-return-statements",
+  "too-many-nested-blocks",
   "duplicate-code",
   "abstract-method",
   "superfluous-parens",