[IMP] crm: display avatar for user_id

This commit improves the salesperson(user_id) field with many2one_avatar_user
widget that will display avatar before user name.

Task Id : 2302572
PR #565013

closes odoo/odoo#58781

X-original-commit: ec05118e85d7e3d4611c5688f3c4a572c86d0afa
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
Co-authored-by: D J <dja@odoo.com>

addons/crm/views/crm_lead_views.xml

@@ -211,7 +211,7 @@
                             </group>
                             <group>
                                 <field name="user_id" domain="[('share', '=', False)]"
-                                    context="{'default_sales_team_id': team_id}"/>
+                                    context="{'default_sales_team_id': team_id}" widget="many2one_avatar_user"/>
                                 <field name="team_id" widget="selection"
                                     domain="['|', ('company_id', '=', False), ('company_id', '=', company_id)]"/>
                                 <field name="type" invisible="1"/>