[IMP] estate: Add a server action for better UX

Problem
---------
Users may want to cancel several houses and flats at once, currently
this is not possible; they have to do it one by one.

Objective
---------
Add a way to cancel several estates in one go.

Solution
---------
Add a server action in the demo data so that it is available for new
users. Old users can create the same server action on their database.

task-123456

estate/__manifest__.py

@@ -9,5 +9,9 @@
         'views/estate_property_views.xml',
         'views/estate_menus.xml',
     ],
-    'license': 'LGPL-3',
+    'license': "LGPL-3",
+    # data files containing optionally loaded demonstration data
+    'demo': [
+        "demo/demo.xml",
+    ],
 }

estate/demo/demo.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <data>
+        <record id="model_estate_property_action_cancel" model="ir.actions.server">
+            <field name="name">Mass cancel</field>
+            <field name="model_id" ref="estate.model_estate_property"/>
+            <field name="binding_model_id" ref="estate.model_estate_property"/>
+            <field name="binding_view_types">list</field>
+            <field name="state">code</field>
+            <field name="code">action = records.action_cancel()</field>
+        </record>
+    </data>
+</odoo>

estate/models/estate_property.py

@@ -27,3 +27,17 @@ class EstateProperty(models.Model):
         string='State',
         selection=[('new', 'New'), ('offer_received', 'Offer Received'), ('offer_accepted', 'Offer Accepted'), ('sold', 'Sold'), ('cancelled', "Cancelled")]
     )
+<<<<<<< HEAD
+=======
+
+    property_type_id = fields.Many2one("estate.property.type", string="Property Type")
+    buyer_id = fields.Many2one("res.partner", string="Buyer", copy=False)
+    salesman_id = fields.Many2one("res.users", string="Salesman", default=lambda self: self.env.user)
+
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags")
+
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+
+    def action_cancel(self):
+        pass
+>>>>>>> 8ba186df ([IMP] estate: Add a server action for better UX)