[ADD] estate: set up real estate advertisement module(CH2,CH3 Done)

-Created a new app called Estate.
-Set up the estate addon with a proper manifest file
-Added estate property model with all required fields.

Author: prsan-odoo

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'RealEstate',
+    'version': '1.0',
+    'category': 'RealEstate',
+    'summary': 'A module to manage real estate advertisements and property offers',
+    'description': """A simple module to manage real estate ads.List your properties, track details like bedrooms and garden,let buyers make offers, and accept or reject them.""",
+    'author': 'Pranjali Sangavekar(prsan)',
+    'license': 'LGPL-3',
+    'depends': ['base'],
+    'application': True,
+    'installable': True,
+    'data': [
+    'security/ir.model.access.csv',
+],
+}

estate/models/__init__.py

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+from . import estate_property

estate/models/estate_property.py

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+from odoo import models,fields
+class Estate_Property(models.Model):
+    _name="estate.property"
+    _description="Real estate system"
+
+    name = fields.Char(string="Property Name", required=True)
+    description = fields.Text()
+    postcode = fields.Char(string="Postal Code")
+    date_availability = fields.Date(string="Availability Date")
+    expected_price = fields.Float(string="Expected Selling Price", required=True)
+    selling_price = fields.Float(string="Selling Price")
+    bedrooms = fields.Integer()
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    garden_orientation = fields.Selection(selection=[('north', 'North'), ('south', 'South'), ('east', 'East'), ('west', 'West')])

estate/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_estate_property,estate.property,model_estate_property,base.group_user,1,1,1,1