Refactor rate limit handling (#280)

* - Refactored retry for rate limits into the base class
- ConsumerProducer is derived from Consumer to simplify code
- Added rate_limit_count metrics for rate limit events

* Add rate limit events to VertexAI and Google AI Studio

* Added Grafana rate limit dashboard

* Add rate limit handling to all LLMs

trustgraph-bedrock/trustgraph/model/text_completion/bedrock/llm.py

@@ -267,6 +267,7 @@ class Processor(ConsumerProducer):
 
         except Exception as e:
 
+            print(type(e))
             print(f"Exception: {e}")
 
             print("Send error response...", flush=True)