Initial release for Folia:
Features
/nick & /unnick — players can set or clear their nickname.
/realname — type a nickname and get the real Mojang name.
Persistent storage — nicknames saved in plugins/NicknameEasy/nicks.yml.
Folia-safe by design — all Bukkit/Paper API calls run on the correct region thread; background file I/O never    touches the API.
Initial release