Update Chinese Translation, Add Traditional Chinese Translation (#2596)

mods/fireflies/locale/fireflies.zh_CN.tr

@@ -2,4 +2,4 @@
 Firefly=萤火虫
 Hidden Firefly=隐藏的萤火虫
 Bug Net=虫网
-Firefly in a Bottle=瓶中的萤火虫
+Firefly in a Bottle=放在瓶子里的萤火虫

mods/fireflies/locale/fireflies.zh_TW.tr

@@ -0,0 +1,5 @@
+# textdomain: fireflies
+Firefly=螢火蟲
+Hidden Firefly=隱藏的螢火蟲
+Bug Net=蟲網
+Firefly in a Bottle=放在瓶子裡的螢火蟲