Base class to add support for specific image formats. The engine supports multiple image formats out of the box (PNG, SVG, JPEG, WebP to name a few), but you can choose to implement support for additional image formats by extending [ImageFormatLoaderExtension]. Default loading behavior. No processing is applied to the image. If set, the image is converted from sRGB to linear encoding. If set, a predefined color map is applied to the image. Used when [member ResourceImporterTexture.editor/convert_colors_with_editor_theme] is [code]true[/code].