Enhancement: Add i18n support

[GiuseppeGalilei]

I've been struggling trying to implement internationalization.
There are several approaches available and the latest, official one, from Astro doesn't seem very well documented.
Any plans of implementing it?

Thanks for the awesome template!

[astrawnuts]

I also support this feature request to add international language support.

[tfsomrat]

We are planning to working on it.

[astrawnuts]

Thank you that is amazing. Astroplate is an amazing project. Thank you for your awesome work on it.

[tfmurad]

@astrawnuts @GiuseppeGalilei Thank you for your patience. We've been diligently working on implementing internationalization, and we're excited to announce that it will be ready for publication in the coming days. Please keep an eye on our Astroplate for updates!

[imaffe]

Is there anything we can do to help ? I would be happy to make some contributions w.r.t i18n (Cause I need to add i18n support anyway )

[IndependentCreator]

Is there anything we can do to help ? I would be happy to make some contributions w.r.t i18n (Cause I need to add i18n support anyway )

I can't speak for the maintainers but I noticed this PR implements quite a bit: #39