[Feature Request]: Highlight unused components in Option API

[axetroy]

• I have searched through existing issues

Feature Request

Background:

It is easy for us to import some unused components. As time increases, these components may increase.

I hope the extension can remind me during the development phase

<template>
  	<div>
		<custom-dialog />
	</div>
</template>

<script>
import Dialog from "@/components/dialog";
import UnusedComponent from "@/components/UnusedComponent";

export default {
  components: {
    "custom-dialog": Dialog, // nothing happened here
    UnusedComponent // Highlight here because this component is not used
  }
}
</script>