Logs & Application Improvement

• Merchant & Token in Logs
• Call Api unwrapping error (Fix for sending 400 to frontend upon bad request and 401 only upon auth failed)
• Added request timeout middleware (To check if it can fix 0 DC)
• Added Drainer lag metrics in Prometheus
• Added speed in Kafka sent by frontend
• Removed Panics to fix 0 DC errors
• Reset drainer memory after every drain, to check if it can fix the sudden increase in Pods memory and then memory not being release issue.