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/global/home.nix

@@ -24,6 +24,12 @@
 
       username = "grey";
       homeDirectory = "/home/${config.home.username}";
+
+      file = inputs.helpers.homeFilesFromStringAttrs {
+        dir = ".local/bin";
+        attrs = config.features.applications.shellScripts;
+        exec = true;
+      };
     };
 
     xdg = {