[鵺鏡] 鵺鏡の韓国語対応を追加 & i18n化

[MY4k]

鵺鏡のダイスボットのi18n化と韓国語対応を追加しました。

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.52%. Comparing base (52ebc53) to head (4a44cef).
⚠️ Report is 9 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #826   +/-   ##
=======================================
  Coverage   96.51%   96.52%           
=======================================
  Files         396      397    +1     
  Lines       23613    23628   +15     
  Branches     6373     6372    -1     
=======================================
+ Hits        22790    22806   +16     
+ Misses        823      822    -1     

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