feat: add initial modules

lib/autoDir.nix

@@ -0,0 +1,15 @@
+lib:
+
+# takes dir as an argument and creates an attribute set by importing all .nix files in that directory
+dir:
+let
+  readDir = builtins.readDir dir;
+  files = lib.attrNames (
+    lib.filterAttrs (
+      name: type: type == "regular" && lib.hasSuffix ".nix" name && name != "default.nix"
+    ) readDir
+  );
+
+  packages = builtins.map (name: lib.removeSuffix ".nix" name) files;
+in
+lib.genAttrs packages (name: import (dir + "/${name}.nix"))