feat(pack): compitable with windows

[fireairforce]

Summary

closes: #2479

Test Plan

[gemini-code-assist]

Summary of Changes

Hello @fireairforce, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the pack feature's compatibility with Windows operating systems by addressing fundamental differences in path handling. It introduces a set of robust utility functions for path normalization, absolute path detection, and separator stripping, which are then integrated into the core logic. This ensures that the application can correctly interpret and manipulate file paths regardless of the underlying operating system, resolving potential issues related to path conventions.

Highlights

• Windows Path Utilities: New utility functions is_absolute_path, to_unix_path, and strip_leading_separator have been introduced in pack-core/src/util.rs to correctly handle Windows-specific path formats and ensure cross-platform compatibility.
• Refactored Path Handling: Existing path manipulation logic within pack-api/src/project.rs and pack-core/src/util.rs has been updated to utilize these new utility functions, standardizing how paths are processed across different operating systems.
• Dependency Update: The regex crate has been added as a new dependency to pack-core to support the implementation of the is_absolute_path function, which uses regular expressions to detect various Windows absolute path patterns.

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[gemini-code-assist]

Code Review

This pull request introduces changes to make the pack crate compatible with Windows by handling different path formats. The changes are well-structured, introducing utility functions for path manipulation like is_absolute_path, to_unix_path, and strip_leading_separator. This centralizes the logic and improves code clarity and maintainability. The use of regex for Windows path detection and Cow for efficient string manipulation are good choices. Overall, this is a solid improvement for cross-platform compatibility. I have one minor suggestion to make the code more idiomatic.