Add Support for More Countries and Cities

[alempasalic]

I'd like to propose a feature to add support for tracking bus transit data in additional countries and cities. This enhancement would significantly broaden the app's usability and reach. However, implementing this feature will require additional resources and time, so I suggest we plan it for a later stage in the project.

[abdeLKabir-56]

@bambooch in this case i suggest adding an admin page where can manage country and city data. The admin would authenticate using an email and password. Once authenticated, they would be redirected to an admin panel where they could add, update, or delete countries and cities. This feature could include a simple form for creating or editing the country and city entries.