This update improves the handling of Brazil's NFS-e tax reporting by incorporating ISO alpha-3 country code mappings. It also simplifies international transactions by skipping city validation for customers outside of Brazil. This ensures accurate tax calculations and compliance with Brazilian regulations.

In this commit:
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- Added a mapping to convert country codes to ISO aplha-3 format and included it in the Tax Calculation and NFS-e requests
- Also updated the city validation to skip it for international transaction (customers outside Brazil).

task-3851670

This update introduces support for Hong Kong's new eMPF platform, enabling companies to export CSV files for reporting employee contributions. This simplifies MPF compliance and provides a standardized method for data submission, aligning with evolving labor laws.

Implement support for eMPF in Odoo,  with the ability to export csv files compliants with the eMPF.

Forward-Port-Of: odoo/enterprise#98144