[Feature Request]: Add Indonesian, Balinese, Javanese, and Sundanese Wikisource

[mrifqis]

Checklist

• This issue contains only one feature request. I will open one issue for every feature I want to request.
• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• This feature is merely an UI/UX update.
• This feature is not going to conflict with many of the existing features/options.

Is your feature request related to a problem? Please describe.

Please add Indonesian Wikisource (https://id.wikisource.org/), Balinese Wikisource (https://jv.wikisource.org/), Sundanese Wikisource (https://su.wikisource.org/) and Javanese Wikisource (https://ban.wikisource.org/) in this app

Describe the solution you'd like

This is a query for Wikidata Item in Indonesian Wikisource: w.wiki/D6ug

How will you/everyone benefit from this feature?

This is a query for Wikidata Item in Indonesian Wikisource: w.wiki/D6ug

Additional context

Item in Balinese Wikisource (https://jv.wikisource.org/), Sundanese Wikisource (https://su.wikisource.org/) and Javanese Wikisource (https://ban.wikisource.org/) still on going