refactor: extract comments

[IWANABETHATGUY]

Related issue (if exists)

Summary

🤖 Generated by Copilot at 7e8bf06

Improved the comment extraction feature in the rspack_plugin_javascript crate. Refactored and simplified the code in minify.rs and plugin.rs to avoid unnecessary sources and comments.

Walkthrough

🤖 Generated by Copilot at 7e8bf06

• Remove unused import of ConcatSource in minify.rs (link)
• Add import of CommentKind in minify.rs to handle different types of comments (link)
• Simplify logic for extracting comments in minify.rs by using a vector of strings instead of a ConcatSource (link, link)
• Remove unnecessary variable and code for preserving comments in minify.rs (link, link)
• Rename extract_comments variable to extract_comments_option in plugin.rs to avoid confusion with the function name (link, link)
• Remove irrelevant comment about tree-shaking in plugin.rs (link)

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Latest commit: c497e4a

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[IWANABETHATGUY]

@hyf0 fixed latest ci error, would you mind approving again?