Add support for different languages and integrate with Weblate

[mariobehling]

Currently the app only supports English. Please add support for other languages and start with Hindi and Vietnamese. Also integrate with the FOSSASIA organisation on weblate.org.

[adityastic]

@Dhruv80576

[Dhruv80576]

I suggest since this application doesn't have much dynamic content it is much better and simpler to use flutter localization and for adding multiple language we can use openai to translate json file to other languages. This solution is pretty scalable and used by large scale applications also. I have already implemented flutter localization and added support for chinese, i can further integrate openai to automatically translate it to multiple languages.
Please share your opinion

[mariobehling]

@Dhruv80576 Sounds great!

[adityastic]

I still see a lot of benefits in terms of community, support for more languages, plus genuine translations. If we already have a weblate for fossasia, it's easier to reuse and manage translations in a single place rather than pushing updates for changing linguistics, be it another language or correcting a mistake.