feat(docs): Add neovim module documentation

docs/src/SUMMARY.md

@@ -2,4 +2,5 @@
 
 - [Nix Based Configuration](./configuration-overview.md)
     - [NixOS Module Options](./nixos-options.md)
+    - [Neovim Module Options](./nvim-options.md)
     - [Home Manager Module Options](./home-options.md)

docs/src/nvim-options.md

@@ -0,0 +1,13 @@
+# Neovim Module Options
+
+Here you will find the neovim options and their default values (if they have
+any).
+
+You might also want to take a look at the [NixNeovim
+Manual](https://nixneovim.github.io/NixNeovim/options.html) or search the
+available options through [NixNeovim option
+search](https://nixneovim.github.io/nixneovim-option-search/).
+
+## Table of Contents
+
+<!-- toc -->