Add developer toolkit UI component

The commit adds a new a UI component that's enabled in development mode.
This component, initially, provides a button that wen clicked, logs all
the script and category names to the console. It helps revising names
used throughout the application.

By having this component in a conditionally rendered component, it's
excluded from the production builds.

src/presentation/components/TheHeader.vue

@@ -22,6 +22,7 @@ export default defineComponent({
     };
   },
 });
+
 </script>
 
 <style scoped lang="scss">