feat(nvim): strip trailing whitespaces on save

neovim/default.nix

@@ -15,6 +15,9 @@
         # auto-close brackets, etc
         nvim-autopairs
 
+        # trailing whirespaces
+        vim-better-whitespace
+
         # better wildmenu
         wilder-nvim
 
@@ -201,6 +204,8 @@
         require("render-markdown").setup({
           file_types = { "markdown", "vimwiki", "copilot-chat" },
         })
+
+        vim.g.strip_whitespace_on_save = 1
       '';
     };
   };