[ADD] estate, estate_account, awesome_owl, awesome_dashboard: tutorial modules

[pavy-odoo]

• Introduced the estate module and property model for managing real estate listings and offers.
• Created the estate_account module, demonstrating inheritance from estate and account.
• Explored and implemented basic Owl reusable UI components (card, counter, to-do list) in awesome_owl.
• Developed a statistics dashboard in awesome_dashboard to visualize T-shirt sales data with a pie chart.

[robodoo]