Add OTel to aelf project

[chopin-fan]

Specifications

As a developer, I would like to integrate OpenTelemetry (OTel) into the Aelf project so that I can monitor and analyze logs, traces, and metrics for better debugging, performance analysis, and system observability.

Features:

• Integrate OTel for centralized logging, tracing, and metrics collection.
• Implement sample dashboards or queries for common monitoring scenarios.

Development Tasks:

• Research and select the appropriate OTel libraries compatible with the Aelf project.
• Integrate OTel logging, tracing, and metrics collection into key components of the Aelf codebase.

Dependencies

• OpenTelemetry SDK and API for .NET
• Backend services like Jaeger for tracing and Prometheus for metrics.

References

• OpenTelemetry Official Documentation
• Aelf Documentation
• Jaeger Tracing Documentation
• Prometheus Documentation