crock-addons/crock_base/views/res_partner.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

  <record id="view_res_partner_filter_inherit_base" model="ir.ui.view">
    <field name="name">res.partner.view.search.inherit</field>
    <field name="model">res.partner</field>
    <field name="inherit_id" ref="base.view_res_partner_filter" />
    <field name="arch" type="xml">
      <filter name="association" position="after">
        <separator />
        <filter name="occitanie" string="Occitanie"
          domain="[('state_id','=',%(l10n_fr_state.res_country_state_languedocroussillon)d)]" />
      </filter>
    </field>
  </record>

  <record id="contacts.action_contacts" model="ir.actions.act_window">
    <field name="context">{'default_is_company': True, 'search_default_type_company':1, 'search_default_occitanie':1,
      'search_default_country_department_groupby': 1}</field>
  </record>

</odoo>