[add] subtype email "adhésion" + button to show mail adhésion from instance

__manifest__.py

@@ -12,6 +12,7 @@
         "cmis_field",
     ],
     "data": [
+        "datas/mail_message_subtype.xml",
         "datas/mail_data.xml",
         "views/scop_adhesion_file.xml",
     ],

datas/mail_message_subtype.xml

+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data noupdate="1">
+
+        <record id="mail_message_subtype_adhesion" model="mail.message.subtype">
+            <field name="name">Mail validation adhésion</field>
+            <field name="model">res.partner</field>
+            <field name="description">Mail envoyé à la coop pour valider l'adhésion au mouvement</field>
+            <field name="interal">True</field>
+            <field name="hidden">True</field>
+        </record>
+
+    </data>
+</odoo>

models/res_partner.py

@@ -47,6 +47,8 @@ class ScopAlfrescoAdhesionPartner(models.Model):
             'default_res_id': self.id,
             'default_use_template': True,
             'default_template_id': template_id.id,
+            'default_subtype_id': self.env.ref(
+                'cgscop_adhesion_alfodoo.mail_message_subtype_adhesion').id,
             'default_composition_mode': 'comment',
         }
         return {