add spectacle config, add spotify, fix cinny video playback with gstreamer

refactor some stuff to look nicer and have more structure too

modules/home/apps/spotify/default.nix

@@ -0,0 +1,25 @@
+{
+  config,
+  lib,
+  pkgs,
+  namespace,
+  ...
+}:
+with lib;
+with lib.${namespace};
+let
+  cfg = config.${namespace}.apps.spotify;
+in
+{
+  options.${namespace}.apps.spotify = with types; {
+    enable = mkBoolOpt false "Whether or not to enable spotify.";
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      librespot
+      spotify-qt
+    ];
+  };
+
+}