pos/pos_barcode_tare/views/templates.xml

<odoo>
    <data>
		<template id="assets_backend" name="pos_barcode_tare" inherit_id="point_of_sale.assets">
				<xpath expr="." position="inside">
			 	<link rel="stylesheet" href="/pos_barcode_tare/static/src/css/tare_screen.css"/>
				<script type="text/javascript" src="/pos_barcode_tare/static/src/js/tare_screen.js"></script>
				<script type="text/javascript" src="/pos_barcode_tare/static/src/js/open_tare_screen_button.js"></script>
				<script type="text/javascript" src="/pos_barcode_tare/static/src/js/barcode.js"></script>
				</xpath>
		</template>
    </data>
</odoo>