GitHub organization page

To better organize the community interaction (and to not tie it all to Discord's server), I created GitHub organization page for this page: https://github.com/DoukutsuRandamu .

Currently it contains:

• new issue tracker: https://github.com/DoukutsuRandamu/IssueTracker
• page for beta releases: https://github.com/DoukutsuRandamu/BetaBranch
• new suggestion box: https://github.com/DoukutsuRandamu/SuggestionBox
• Japanese translation pack: https://github.com/DoukutsuRandamu/JapaneseResourcePack

In future, it will probably contain the wiki, discussions page and maybe something else.