server-tools/database_cleanup/views/menu.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record model="ir.ui.menu" id="menu_database_cleanup">
        <field name="name">Database cleanup</field>
        <field name="sequence" eval="10" />
        <!-- attach to Settings -> Technical -->
        <field name="parent_id" ref="base.menu_custom"/>
        <field name="groups_id" eval="[(6,0, [ref('base.group_erp_manager')])]"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_modules">
        <field name="name">Purge obsolete modules</field>
        <field name="sequence" eval="10" />
        <field name="action" ref="action_purge_modules" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_models">
        <field name="name">Purge obsolete models</field>
        <field name="sequence" eval="20" />
        <field name="action" ref="action_purge_models" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_columns">
        <field name="name">Purge obsolete columns</field>
        <field name="sequence" eval="30" />
        <field name="action" ref="action_purge_columns" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_tables">
        <field name="name">Purge obsolete tables</field>
        <field name="sequence" eval="40" />
        <field name="action" ref="action_purge_tables" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_data">
        <field name="name">Purge obsolete data entries</field>
        <field name="sequence" eval="50" />
        <field name="action" ref="action_purge_data" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_menus">
        <field name="name">Purge obsolete menu entries</field>
        <field name="sequence" eval="60" />
        <field name="action" ref="action_purge_menus" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_create_indexes">
        <field name="name">Create missing indexes</field>
        <field name="sequence" eval="70" />
        <field name="action" ref="cleanup_create_indexes_wizard_action" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>

    <record model="ir.ui.menu" id="menu_purge_property">
        <field name="name">Purge obsolete properties</field>
        <field name="sequence" eval="80" />
        <field name="action" ref="action_purge_property" />
        <field name="parent_id" ref="menu_database_cleanup"/>
    </record>
</odoo>