fix: allow jsDoc comments for custom functions (#66)

Allows jsDoc comments for custom sheets functions to remain in builds so that autocomplete works correctly

webpack.config.js

@@ -305,6 +305,9 @@ const serverConfig = {
           module: false,
           output: {
             beautify: true,
+            // support custom function autocompletion
+            // https://developers.google.com/apps-script/guides/sheets/functions
+            comments: /@customfunction/,
           },
         },
       }),