🏗️ PR: Add Odoo Real Estate Tutorial – Property, Offers, and Type Relations

[umbm-odoo]

This pull request introduces a tutorial implementation of a Real Estate module in Odoo. It covers the core functionalities of managing properties, offers, property types, and property tags. The module showcases relationships between models, computed fields, constraints, and on-change behaviors.

[robodoo]

[vava-odoo]

@naja628 :-)