web/web_widget_many2many_tags_multi_selection/views/web_widget_many2many_tags_multi_selection.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <template id="assets_backend" name="web_widget_many2many_tags_multi_selection" inherit_id="web.assets_backend">
        <xpath expr="." position="inside">
            <script type="text/javascript" src="/web_widget_many2many_tags_multi_selection/static/src/js/view_form.js"></script>
        </xpath>
    </template>
</odoo>