client: Use a multiple column layout for the MIME type listing

Author: adoriandoran

src/public/stylesheets/style.css

@@ -1199,6 +1199,10 @@ button.close:hover {
     flex-grow: 0 !important;
 }
 
+.options-mime-types {
+    column-width: 250px;
+}
+
 textarea {
     cursor: auto;
 }
@@ -1232,4 +1236,5 @@ textarea {
 
 .jump-to-note-results .aa-suggestions {
     padding: 1rem;
-}
+}
+