Fix timezone data dependency on Windows with Ruby 4 and add Toki Pona

[rimsky-yamatov]

Summary

Add the timezone data dependency required for the website to build on Windows with Ruby 4, and add Toki Pona support to the website.

Problem

When running the development server on Windows with Ruby 4, Jekyll fails because TZInfo cannot find a timezone data source.

In addition, Toki Pona content was added to the website and needs to be included in this change.

Changes

• Add tzinfo-data as a dependency.
• Allow the Jekyll development server to find timezone data on Windows.
• Add Toki Pona language support and related website content.
• Add the necessary Toki Pona translations and localization data.

Testing

Tested with:

• Windows
• Ruby 4
• bundle exec rake serve

The Jekyll development server now proceeds without the TZInfo::DataSourceNotFound error.

The newly added Toki Pona content was also checked to ensure it is included correctly in the website.

[GabrielLidenor]

Hey @rimsky-yamatov

PR description says you only fixed the timezone, but it also adds translations to Toki Pona.

Could you please separate the changes into two PRs ? One for the timezone fix and another for the translations ? That would make your PR a lot easier to review :)

Thanks