feat: add fetchpriority to img attrs

Author: ascorbic

packages/svelte/elements.d.ts

@@ -978,6 +978,7 @@ export interface HTMLImgAttributes extends HTMLAttributes<HTMLImageElement> {
 	alt?: string | undefined | null;
 	crossorigin?: 'anonymous' | 'use-credentials' | '' | undefined | null;
 	decoding?: 'async' | 'auto' | 'sync' | undefined | null;
+	fetchpriority?: 'auto' | 'high' | 'low' | undefined | null;
 	height?: number | string | undefined | null;
 	ismap?: boolean | undefined | null;
 	loading?: 'eager' | 'lazy' | undefined | null;

packages/svelte/src/constants.js

@@ -49,6 +49,7 @@ export const PassiveDelegatedEvents = ['touchstart', 'touchmove', 'touchend'];
  */
 export const AttributeAliases = {
 	// no `class: 'className'` because we handle that separately
+	fetchpriority: 'fetchPriority',
 	formnovalidate: 'formNoValidate',
 	ismap: 'isMap',
 	nomodule: 'noModule',