feat(markdown-language-features): #208398 add avif as image extension (#212547)

extensions/markdown-language-features/src/languageFeatures/copyFiles/shared.ts

@@ -20,6 +20,7 @@ enum MediaKind {
 
 export const mediaFileExtensions = new Map<string, MediaKind>([
 	// Images
+	['avif', MediaKind.Image],
 	['bmp', MediaKind.Image],
 	['gif', MediaKind.Image],
 	['ico', MediaKind.Image],

extensions/markdown-language-features/src/util/mimes.ts

@@ -9,6 +9,7 @@ export const Mime = {
 } as const;
 
 export const mediaMimes = new Set([
+	'image/avif',
 	'image/bmp',
 	'image/gif',
 	'image/jpeg',