[ADD] estate_account: create initial module structure with estate property integration and invoice creation

Author: Sylsee

estate_account/__init__.py

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+from . import models

estate_account/__manifest__.py

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+{
+    'name': "Estate Account",
+    'description': """
+        Link the Estate app with the account
+    """,
+    'version': '1.0',
+    'author': "Odoo S.A.",
+    'license': "LGPL-3",
+    'depends': ['estate', 'account'],
+}

estate_account/models/__init__.py

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+from . import estate_property

estate_account/models/estate_property.py

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+from odoo import models, Command
+
+
+class EstateProperty(models.Model):
+    _inherit = 'estate.property'
+
+    def action_set_property_as_sold(self):
+        journal = self.env['account.journal'].search([('type', '=', 'sale')], limit=1)
+        self.env['account.move'].create(
+            {
+                'partner_id': self.buyer_id.id,
+                'move_type': 'out_invoice',
+                'journal_id': journal.id,
+                'line_ids': [
+                    Command.create(
+                        {
+                            'name': self.name,
+                            'quantity': 1,
+                            'price_unit': 0.06 * self.selling_price,
+                        }
+                    ),
+                    Command.create(
+                        {
+                            'name': 'Administrative fees',
+                            'quantity': 1,
+                            'price_unit': 100,
+                        }
+                    ),
+                ],
+            }
+        )
+        return super().action_set_property_as_sold()