Add Nick Janetakis' notes script

https://github.com/nickjj/notes
https://nickjanetakis.com/blog/organize-your-text-based-notes-from-the-command-line-with-this-script

nix/modules/home-manager/features/cli/default.nix

@@ -36,6 +36,7 @@
     ./git.nix
     ./htop.nix
     ./lsd.nix
+    ./notes.nix
     ./pet.nix
     ./phpactor.nix
     ./ripgrep.nix

nix/modules/home-manager/features/cli/notes.nix

@@ -0,0 +1,5 @@
+{ pkgs, ... }:
+
+{
+  home.packages = with pkgs; [ notes ];
+}