Add neovim

vim.nix

@@ -2,14 +2,25 @@
 {
   programs.vim = {
     enable = true;
-    defaultEditor = true;
     plugins = with pkgs.vimPlugins; [
       vim-nix
       rust-vim
       fzf-vim
+      sleuth
     ];
     extraConfig = ''
       source ${./rcfiles/vimrc}
     '';
   };
+
+  programs.neovim = {
+    enable = true;
+    defaultEditor = true;
+    extraLuaConfig = ''
+      vim.opt.ignorecase = true -- search case insensitive
+      vim.opt.smartcase = true -- search matters if capital letter
+      vim.opt.inccommand = "split" -- "for incsearch while sub
+      vim.g.mapleader = ","
+    '';
+  };
 }