feat: env_logger ~> tracing_subscriber

[de-sh]

Starts implementing #139

env_logger

• Simple Logging:
  1. Filters log messages based on environment variables (e.g., RUST_LOG).
  2. Outputs log messages in a human-readable format.\
• Compatibility: Works seamlessly with crates that use the log crate for emitting log messages.
• Configuration: Easy setup with minimal dependencies.

tracing_subscriber

• Advanced Tracing:
  1. Supports spans, which represent scopes of work and can include nested spans for hierarchical logging.
  2. Collects rich metadata about events and spans (e.g., source location, fields, etc.).
  3. Allows dynamic configuration and advanced filtering (e.g., by span, field, or metadata).
• Subscribers:
  1. Provides customizable subscribers for processing trace data (e.g., fmt, json, or custom handlers).
  2. Offers flexibility in output formats, including JSON or custom formats.
• Integration: Works with other tools like tracing-opentelemetry for distributed tracing.

Before

After