Document shared systems up to B

[GoodBoyDigital]

🤖 Generated by Copilot at d627be3

Summary

📝🔧🎨

This pull request improves the documentation and code quality of the rendering core classes and functions in PixiJS, adding JSDoc comments, refactoring, and fixing some errors. It also updates the visual tests to remove the unsupported canvas renderer option. The main files affected are autoDetectRenderer.ts, BackgroundSystem.ts, BlendModePipe.ts, Buffer.ts, BufferResource.ts, and init.ts.

We are the rendering core, we document our code
We use JSDoc comments, we make our classes shine
We refactor and export, we fix the TypeScript errors
We are the rendering core, we rock the PixiJS world

Walkthrough

• Document the rendering core classes and types, adding JSDoc comments to the rendering namespace, the autoDetectRenderer function, the AutoDetectOptions, BackgroundSystemOptions, TypedArray, and BufferOptions interfaces, the BackgroundSystem, BlendModePipe, Buffer, and BufferResource classes, the BufferUsage enum, and the fastCopy function (link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link)
• Move the AutoDetectOptions, BackgroundSystemOptions, TypedArray, and BufferOptions interfaces and the BackgroundSystem class from their original files to src/rendering/init.ts, where they are exported and consistent with other rendering options interfaces and systems (link, link, link)
• Fix a TypeScript error in the Buffer.destroy method by casting this.descriptor to any before assigning it to null (link)
• Remove an empty line from the Buffer class constructor for code style (link)
• Update the visual tests to remove the canvas option from the renderTest function and its calls, as the canvas renderer is no longer supported in PixiJS v6 (link, link)

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