server-tools/database_cleanup/views/create_indexes.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="cleanup_create_indexes_wizard_view_form" model="ir.ui.view">
        <field name="model">cleanup.create_indexes.wizard</field>
        <field name="inherit_id" ref="form_purge_wizard" />
        <field name="mode">primary</field>
        <field name="arch" type="xml">
            <button name="purge_all" position="attributes">
                <attribute name="string">Create all</attribute>
            </button>
            <button name="purge" position="attributes">
                <attribute name="string">Create</attribute>
            </button>
        </field>
    </record>

    <record id="cleanup_create_indexes_wizard_action" model="ir.actions.server">
        <field name="name">Create missing indexes</field>
        <field name="type">ir.actions.server</field>
        <field name="state">code</field>
        <field name="model_id" ref="database_cleanup.model_cleanup_create_indexes_wizard" />
        <field name="code">action = env.get('cleanup.create_indexes.wizard').get_wizard_action()</field>
    </record>

    <record id="cleanup_create_indexes_line_view_tree" model="ir.ui.view">
        <field name="model">cleanup.create_indexes.line</field>
        <field name="inherit_id" ref="tree_purge_line" />
        <field name="mode">primary</field>
        <field name="arch" type="xml">
            <button name="purge" position="attributes">
                <attribute name="string">Create this index</attribute>
                <attribute name="icon">gtk-add</attribute>
            </button>
        </field>
    </record>

    <record id="cleanup_create_indexes_line_action" model="ir.actions.server">
        <field name="name">Create</field>
        <field name="type">ir.actions.server</field>
        <field name="state">code</field>
        <field name="model_id" ref="database_cleanup.model_cleanup_create_indexes_line" />
        <field name="code">records.purge()</field>
        <field name="binding_model_id" ref="database_cleanup.model_cleanup_create_indexes_line" />
    </record>
</odoo>