feat: add lint tool

README.md

@@ -83,3 +83,18 @@ commands:
 The **list** command now uses the Linux `ls` command to list directory contents. The **grep** command searches for a given pattern in a file or all files in a directory.
 
 Enjoy your improved, more flexible ChatGPT Neovim plugin with step-by-step support!
+
+## Test when developing
+add new plugin to runtimepath
+```vim
+:set rtp^=~/temp_plugins/chatgpt.vim
+```
+Clear Lua module cache
+```vim
+:lua for k in pairs(package.loaded) do if k:match("^chatgpt_nvim") then package.loaded[k]=nil end end
+```
+Load new plugin code
+```vim
+:runtime plugin/chatgpt.vim
+```
+