[ADD] estate_account: implement new estate_account module

-Initialize the estate_account module with dependencies on estate and account.
-Inherit the estate.property model and override the action_sold method.
-create an account.move with partner_id from the property and move_type.
-Add two invoice line 6% of selling price and additional 100 administrative fees

estate_account/__init__.py

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+from . import models

estate_account/__manifest__.py

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+{
+    'name': 'Estate Account',
+    'version': '1.0',
+    'depends': ['estate', 'account'],
+    'data': [],
+    'installable': True,
+    'application': True,
+    'auto_install': False,
+    'license': 'LGPL-3'
+}

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
+
+
+class EstateProperty(models.Model):
+    _inherit = 'estate.property'
+
+    def action_set_sold(self):
+        # print("Overridden action_set_sold method in estate_account")
+        move_values = {
+            'partner_id': self.buyer_id.id,
+            'move_type': 'out_invoice',
+            'invoice_line_ids': [
+               # 6% of the selling price
+                (0, 0, {
+                    'name': 'Commission (6% of selling price)',
+                    'quantity': 1,
+                    'price_unit': self.selling_price * 0.06,
+                }),
+                # Administrative fees of 100.00
+                (0, 0, {
+                    'name': 'Administrative Fees',
+                    'quantity': 1,
+                    'price_unit': 100.00,
+                }),
+            ],
+            }
+        self.env['account.move'].create(move_values)
+        # print(f"Created account.move with ID: {account_move.id} and invoice lines")
+        return super().action_set_sold()