[ADD] estate: added a new estate module

[abeg-odoo]

We have added a module as an application with a model a some basic properties like (name, description, expected price ...etc) We have added security rules for read, write, create and delete actions on this model We have added menu items and UI interaction to access a form view of the records we create and we also added attributes to some properties of the model like (copy, default, readonly, required)

[robodoo]

[SergeBayet]

@naja628 You can take over :)