add features.applications.shellScripts option

uses a custom function from my helper flake to convert a basic attrset of strings into a format `home.file` will accept

modules/hosts/takamaki/home/zsh.nix

@@ -2,6 +2,7 @@
   flake.homeModules.takamaki = { config, pkgs, ... }: {
     programs.zsh.shellAliases = {
       apply-config = "zsh -c 'cd ${config.info.rootPath}; git add .; home-manager switch --flake .#takamaki -b bak'";
+      apply-config-trace = "zsh -c 'cd ${config.info.rootPath}; git add .; home-manager switch --flake .#takamaki -b bak --show-trace'";
       update-config = "zsh -c 'cd ${config.info.rootPath}; git add .; nix flake update; home-manager switch --flake .#takamaki -b bak'";
     };
   };