feat: add id_formal and id_informal localizations

[riipandi]

What kind of change does this PR introduce?

Feature

What is the current behavior?

No Indonesian (Bahasa) translation

What is the new behavior?

Adds formal and informal translations for Bahasa.

Additional context

Some word in Bahasa has various terms. Example: "you" in Bahasa:

• Formal: "Anda"
• Informal: "Kamu"

Reference:

• https://en.wiktionary.org/wiki/Category:Indonesian_pronouns
• https://www.quora.com/How-does-spoken-Indonesian-differ-from-formal-Indonesian-and-is-Bahasa-Gaul-and-Bahasa-Jakarta-the-same

[silentworks]

Thanks for this PR, we've moved all additional languages to a new directory in the root of this repository. This is because we no longer ship the additional languages with any of the packages, It is now up to the user to import the package they wish to use into their project by downloading the files from this repository.