libsdl3: Added extra configuration options

[rempas]

This patch adds extra configuration options to allow to disable parts of sdl3 that we don't need.

• Before adding new features and new modules, please go to issues to submit the relevant feature description first.
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---

• 增加新特性和新模块之前，请先到issues提交相关特性说明，经过讨论评估确认后，再进行相应的代码提交，避免做无用工作。
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[gemini-code-assist]

Code Review

This pull request introduces granular configuration options for libsdl3, allowing users to toggle specific features like video, audio, and GPU support. It refactors the package's dependency logic to conditionally include headers and libraries based on these configurations. The review feedback identifies typos in the configuration descriptions and highlights necessary adjustments for platform-specific dependencies, specifically regarding wasm and X11.

[gemini-code-assist]

Typo in description: 'spawing' should be 'spawning'.

    add_configs("process", { description = "Enable support for SDL's cross-platform process spawning", default = true, type = "boolean"})

[gemini-code-assist]

Typo in description: 'standar' should be 'standard'.

    add_configs("filesystem", { description = "Enable support for SDL's standard file path handling", default = true, type = "boolean"})

[gemini-code-assist]

The egl-headers and opengl-headers dependencies should not be added for the wasm platform, as they are explicitly skipped in the on_install block (line 170). This ensures consistency between the package dependencies and the build configuration.

        if supports_video and not package:is_plat("wasm") then

[gemini-code-assist]

The xorgproto dependency is missing from the deplibs list in on_load. It must be added as a direct dependency here so that package:dep("xorgproto") can successfully retrieve its include directories in the on_install block (line 191).

            local deplibs = {"libx11", "libxcb", "libxext", "libxcursor", "libxfixes", "libxi", "libxrandr", "libxrender", "libxss", "xorgproto"}