feat: add logger configs to MultiModelTrainer

[Akshat105]

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Description

Add markdown_logger_config and latex_logger_config parameters to
MultiModelTrainer so external users can customize the default
MarkdownTableLogger and LaTexTableLogger (e.g. precision, table caption,
sort order, borders) without providing a fully custom logger.

• Add MarkdownTableConfig TypedDict with optional precision key
• Add precision key to existing LaTexTableConfig TypedDict
• Wire both configs through __setup_logger with backward-compatible defaults
• Export MarkdownTableConfig from hyperbench.train
• Add 7 unit tests covering defaults, custom values, partial overrides,
  and custom-logger bypass

Checklist

• Does your submission pass all tests? (use make test)
• Have you written tests to cover all your changes? If not, provide a reason.
• Have you lint your code locally before submission? (use make format)
• Have you type checked your code locally before submission? (use make typecheck)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[ddevin96]

hi @Akshat105, thanks for opening a PR!
Your PR helped us identity a small issue with the management of the token. We have pushed an issue to fix that, so if you rebase and include the changes, the test will act correctly.

We will also leave some comments in the PR In a bit!