Merge pull request #2835 from betagouv/debounce_autocomplete

Autocomplete.js: debounce input

app/javascript/shared/autocomplete.js

@@ -32,7 +32,8 @@ function source(url) {
         const openTag = `<div class="aa-suggestion ${mineClass}">`;
         return autocomplete.escapeHighlightedString(label, openTag, '</div>');
       }
-    }
+    },
+    debounce: 300
   };
 }