[Feature] Built-in Logging Support (ILogger<T> Integration)

[RuslanPr0g]

Description
Integrate ILogger<T> into the FileFlower pipeline steps and core lifecycle so users can benefit from structured logging with minimal setup.

Acceptance Criteria

• Users can inject ILogger<T> into their custom pipeline steps.
• Internal events (e.g., file detected, step started/failed) are logged using ILogger.
• Logging respects user-defined logging levels.

Benefits

• Better observability and debugging experience.
• Seamless integration with ASP.NET Core logging infrastructure.