As I explained in response to PR #8 , the purpose of the english.json5 and spanish.json5 files is for testing and demonstration, not for translation per se. The audience of NppCSharpPluginPack is programmers (who must understand English to read the source code), while the audience of a plugin based on NppCSharpPluginPack is Notepad++ users (who may not understand much English, and would prefer to have the plugin's UI translated to other languages).

Therefore, while I will not be accepting PRs that add new langName.json5, I obviously encourage anyone using NppCSharpPluginPack as a template to encourage such PRs from their users.