feat(docs): Add neovim module documentation

nvim/options.nix

@@ -1,22 +1,3 @@
-{
-  # Appearance
-  number = true;
-  relativenumber = true;
-  colorcolumn = "+1";
-  cursorline = true;
-  wrap = false;
-  splitright = true;
-  # Tabs & indentation
-  smarttab = true;
-  autoindent = true;
-  smartindent = true;
-  # Search path
-  path = ".,/usr/include,**";
-  wildmenu = true;
-  hlsearch = true;
-  incsearch = true;
-  ignorecase = true; # Search ignores cases
-  smartcase = true; # Unless it has a capital letter
-  # Enable local configuration :h 'exrc'
-  exrc = true; # safe since nvim 0.9
+{ lib, ... }: {
+  options.jhome.nvim.enable = lib.mkEnableOption "jalil's neovim configuration" // { default = true; example = false; };
 }