treewide: implement auto importing for modules

Reduce maintenance burden and increase efficiency by automatically
importing modules following a specific convention.

Co-authored-by: awwpotato <awwpotato@voidq.com>
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

modules/programs/script-directory/default.nix

@@ -0,0 +1,37 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  cfg = config.programs.script-directory;
+in
+{
+  meta.maintainers = [ lib.hm.maintainers.janik ];
+
+  options.programs.script-directory = {
+    enable = lib.mkEnableOption "script-directory";
+
+    package = lib.mkPackageOption pkgs "script-directory" { };
+
+    settings = lib.mkOption {
+      default = { };
+      type = lib.types.attrsOf lib.types.str;
+      example = lib.literalExpression ''
+        {
+          SD_ROOT = "''${config.home.homeDirectory}/.sd";
+          SD_EDITOR = "nvim";
+          SD_CAT = "lolcat";
+        }
+      '';
+      description = "script-directory config, for options take a look at the [documentation](https://github.com/ianthehenry/sd#options)";
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    home = {
+      packages = [ cfg.package ];
+      sessionVariables = cfg.settings;
+    };
+  };
+}