Expose TextureHandler#parsers as public API with addParser/removeParser methods#7878
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…er methods - Add comprehensive JSDoc documentation for parsers property - Implement addParser() method following ModelHandler pattern for extensibility - Implement removeParser() method to enable tree-shaking of unused parsers - Add private _customParsers array to store custom parsers with decider functions - Update _getParser() method to check custom parsers before default parsers - Update maxRetries setter to handle both default and custom parsers - Maintain 100% backward compatibility with existing functionality - Enable configuration, treeshaking, and better developer experience This resolves the architectural inconsistency between TextureHandler and ModelHandler by applying the proven addParser pattern to texture handling. Custom parsers are checked first, allowing developers to override default behavior or add support for new formats like 16-bit PNGs or headerless textures. Fixes playcanvas#7564
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Expose TextureHandler#parsers as public API with addParser/removeParser methods
This resolves the architectural inconsistency between TextureHandler and ModelHandler by applying the proven addParser pattern to texture handling. Custom parsers are checked first, allowing developers to override default behavior or add support for new formats like 16-bit PNGs or headerless textures.
Rebased onto latest main (Feb 2026).
Fixes #7564
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