Refactor editor architecture

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

src/utilities/filesystem.ts

@@ -64,10 +64,7 @@ const guessMimeType = async (
   uri: string,
   hint?: string | null,
 ): Promise<string | undefined> => {
-  if (hint) {
-    if (allowedMimeTypes.includes(hint)) return hint;
-    if (!hint.startsWith('image/')) return undefined;
-  }
+  if (hint && allowedMimeTypes.includes(hint)) return hint;
 
   const guessedMimeType = guessMimeTypeFromExtension(uri);
   if (guessedMimeType) return guessedMimeType;