Add support for webp, heic, and heif image formats

https://en.wikipedia.org/wiki/WebP
https://en.wikipedia.org/wiki/High_Efficiency_Image_File_Format

core/modules/parsers/imageparser.js

@@ -35,6 +35,9 @@ exports["image/jpg"] = ImageParser;
 exports["image/jpeg"] = ImageParser;
 exports["image/png"] = ImageParser;
 exports["image/gif"] = ImageParser;
+exports["image/webp"] = ImageParser;
+exports["image/heic"] = ImageParser;
+exports["image/heif"] = ImageParser;
 exports["image/x-icon"] = ImageParser;
 
 })();

core/wiki/config/EditorTypeMappings.multids

@@ -1,6 +1,9 @@
 title: $:/config/EditorTypeMappings/
 
 image/gif: bitmap
+image/webp: bitmap
+image/heic: bitmap
+image/heif: bitmap
 image/jpeg: bitmap
 image/jpg: bitmap
 image/png: bitmap