[ADD] estate: initial setup of models, fields, views, and constraints

[pkgu-odoo]

Set up module configuration and initialization.

• Implemented the main model with fields.
• Managed access controls for the estate_property model.
• Implemented custom list, form, and search views.
• Implemented property_type and property_tag, and defined relations.
• Implemented and computed new fields like total_area and best_price.
• Implemented buttons for actions like Cancel, Sold, Accept, and Refuse.
• Customized views and Implemented constraints based on state.
• Implemented computed fields and statistical buttons for offers.
• Implemented inheritance for extending and customizing functionality.