Added Ray Train LoggingManager Utility Class

[JasonLi1909]

Added a LoggingManager utility class to Ray Train's logging module for grouping logging utility functions. Also modified associated test cases as necessary.

[gemini-code-assist]

Summary of Changes

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This pull request significantly refactors the logging infrastructure within Ray Train by consolidating various logging utility functions into a dedicated LoggingManager class. This change aims to improve the modularity, maintainability, and overall organization of the logging code, making it easier to manage and extend in the future.

Highlights

• Code Organization: Introduced a new LoggingManager utility class within Ray Train's logging module to centralize and group related logging functions.
• Refactoring: Existing standalone logging utility functions, such as those for configuring controller and worker loggers and retrieving log directories, have been refactored and moved into the LoggingManager as static methods.
• API Update: All internal call sites across the controller, worker, and test_logging modules have been updated to invoke these logging functionalities through the newly introduced LoggingManager class, ensuring consistent usage.

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[gemini-code-assist]

Code Review

This pull request introduces a LoggingManager utility class to Ray Train's logging module for grouping logging utility functions. The changes involve refactoring existing logging functions into static methods within the new class and updating associated call sites. The use of a utility class improves code organization and maintainability.

[justinvyu]

Should be good after this one comment!