Support spine skins

[MakinoharaShoko]

关联 OpenWebGAL/WebGAL#912

[gemini-code-assist]

Summary of Changes

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This pull request significantly enhances the animation capabilities of the editor by introducing support for Spine animation skins and a powerful new multi-segment animation command. It also improves user experience by implementing robust client-side file path validation with clear visual warnings, ensuring more reliable asset management.

Highlights

• Spine Skin Support: Implemented support for Spine animation skins, allowing users to select different skins for Spine models within the editor. This includes parsing skin data from Spine JSON files and providing a UI control for selection.
• Multi-Segment Animation Command: Introduced a new setTempAnimation command and a dedicated editor component to define complex, multi-segment animations. Users can now create sequences of animation frames, each with its own transform, duration, and easing function.
• Enhanced File Path Validation: Improved client-side validation for file paths, adding a broader range of illegal characters (including #, %, &, ?, @) and providing visual feedback to the user when an invalid path is detected. Semicolons in file names are now escaped.
• Localization Updates: Added and updated numerous localization strings across English, Japanese, and Simplified Chinese to support the new Spine skin features, multi-segment animation controls, and file path validation messages.

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[gemini-code-assist]

Code Review

This pull request introduces functionality to select and apply Spine skins within the ChangeFigure component, enhancing the graphical editor's capabilities for Spine animations. This includes adding state management for skins, parsing skin data from Spine JSON, and integrating a UI for skin selection. Additionally, the PR refactors locale files, notably by replacing a specific error message detailing forbidden characters in filenames with a more general one. Review feedback suggests that restoring the more detailed error message or providing documentation for forbidden characters would improve user experience.

[gemini-code-assist]

移除了包含具体特殊字符列表的错误消息。虽然保留了更通用的错误消息，但提供具体字符列表可能对用户更友好，有助于他们理解哪些字符是禁止的。建议考虑恢复更详细的错误提示，或者在文档中明确说明。

[gemini-code-assist]

移除了包含具体特殊字符列表的错误消息。虽然保留了更通用的错误消息，但提供具体字符列表可能对用户更友好，有助于他们理解哪些字符是禁止的。建议考虑恢复更详细的错误提示，或者在文档中明确说明。

[gemini-code-assist]

移除了包含具体特殊字符列表的错误消息。虽然保留了更通用的错误消息，但提供具体字符列表可能对用户更友好，有助于他们理解哪些字符是禁止的。建议考虑恢复更详细的错误提示，或者在文档中明确说明。