bug fixes and new e2e tests

[nadeemb53]

• Updated Makefile to include epoch duration and slice parameters for testing.
• Refactored DenyListManager to support cache-only mode and improved gRPC connection handling.
• Modified proto definitions to use Address type for deny list requests.
• Fixed NullifierTracker and related tests for better concurrency and cache management.
• Updated Docker Compose configurations for testing with shorter epoch durations.
• Improved error handling and logging in various components, including database migrations and gRPC services.
• Added new tests for deny list functionality and gasless transactions, ensuring robust edge case handling.