Add Traditional Chinese (zh-Hant) translation

The work is mainly based on the existing Android translation strings.
For any new or untranslated strings, common terminologies used in
Taiwan were adopted to ensure consistency and clarity for local users.

NearDrop.xcodeproj/project.pbxproj

@@ -395,6 +395,7 @@
 				fr,
 				ar,
 				ro,
+				"zh-Hant",
 			);
 			mainGroup = 69DA9A0529E0BF5100A442DA;
 			packageReferences = (