move options back out to their config files, improve documentation

modules/features/applications/gui/spotify.nix

@@ -1,4 +1,27 @@
-{ inputs, self, ... }: {
+{ inputs, self, ... }: let
+  spicetifyEnableOptionAttrs = { lib }: {
+    type = lib.types.bool;
+    description = "Whether to enable Spicetify, a modified version of Spotify that supports plugins and themes.";
+    default = false;
+  };
+
+  spicetifyThemeOptionAttrs = { pkgs, lib }: {
+    type = inputs.nixpkgs.lib.types.nullOr (inputs.nixpkgs.lib.types.enum (builtins.attrNames inputs.spicetify.legacyPackages.${pkgs.stdenv.hostPlatform.system}.themes));
+    description = "This option is used to select a theme for Spicetify to use, from the list of available packages themes.";
+    default = null; 
+  };
+in {
+  imports = [ (inputs.helpers.mkMirroredModulesFlakeModule "graphicsOptions" ({ lib, ... }: {
+    options.features.applications.gui.spotify.enable = lib.mkEnableOption "Spotify";
+  })) ];
+
+  flake.nixosModules.graphicsOptions = { lib, pkgs, ... }: {
+    options.features.applications.gui.spotify.spicetify = {
+      enable = inputs.helpers.mkRedundantOption "features.nixos.home-manager.enable" "true" (spicetifyEnableOptionAttrs { inherit lib; });
+      theme = inputs.helpers.mkRedundantOption "features.nixos.home-manager.enable" "true" (spicetifyThemeOptionAttrs { inherit pkgs lib; });
+    };
+  };
+
   flake.nixosModules.graphics = { pkgs, config, lib, ... }: let
     spicePkgs = inputs.spicetify.legacyPackages.${pkgs.stdenv.hostPlatform.system};
   in {
@@ -12,6 +35,13 @@
     });
   };
 
+  flake.homeModules.graphicsOptions = { lib, pkgs, ... }: {
+    options.features.applications.gui.spotify.spicetify = {
+      enable = lib.mkOption (spicetifyEnableOptionAttrs { inherit lib; });
+      theme = lib.mkOption (spicetifyThemeOptionAttrs { inherit pkgs lib; });
+    };
+  };
+
   flake.homeModules.graphics = { pkgs, config, lib, ... }: let
     spicePkgs = inputs.spicetify.legacyPackages.${pkgs.stdenv.hostPlatform.system};
   in {