[Feature] Language Localization

Issue

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Description

Currently JDA-Utilities is available only in English with no support for other languages.

A similar suggestion was made in #33, where I referenced that we were playing around with the idea of multi-language support for the library.

Additionally to this feature, an addition to GuildSettingsProvider should be made to support per-guild languages.

Finally, this will most likely support several default languages, and translations from JDA community members are more than appreciated.

[Andre601]

And I could help with German

[Codixer]

Dutch over here 👋