feat(country): add type hints for Country class (#92)

* feat(country): add type hints for `Country` class

Enhances the `Country` class by adding type hints for the `code` attribute,
implementing comparison and equality methods, and introducing a new
property for `name`. This improves type safety and usability of the
class.

Implements: #91

* feat(deps): add phonenumbers package in dev deps

This change adds missing `phonenumbers` package in develop to have `mypy` pass out-of-the-box.

Implements: #91

Author: Mulugruntz

Pipfile

@@ -6,6 +6,7 @@ name = "pypi"
 [dev-packages]
 sqlalchemy-utils = "==0.42.0"
 sqlalchemy2-stubs = "==0.0.2a38"
+phonenumbers = ">=5.9.2"
 
 mypy = "==1.18.2"
 twine = "==6.2.0"