Add Romanized Arabic

[NicolasBFR]

Describe the problem

I would like to add Romanized Arabic to the standard languages of Weblate. Arabic is the most spoken Right to Left language in the world and my software does not support it. It is a huge problem for a lot of software engineers.

Solution brainstorm

Add language code ar-Latn like the other Roman variants

Describe alternatives you have considered

No response

Screenshots

No response

Additional context

No response

[github-actions]

This issue seems to be a good fit for newbie contributors. You are welcome to contribute to Weblate! Don't hesitate to ask any questions you would have while implementing this.

You can learn about how to get started in our contributors documentation.