feat(zeus): install Prism Launcher

configs/nixos/modules/desktop/apps/prismlauncher.nix

@@ -0,0 +1,24 @@
+{
+  config,
+  lib,
+  pkgs,
+  util,
+  ...
+}:
+# Prism Launcher manages Minecraft instances.
+let
+  user = config.user.name;
+in
+{
+  options.modules.desktop.apps.prismlauncher.enable =
+    lib.mkEnableOption "Prism Launcher, a Minecraft launcher";
+
+  config = lib.mkIf config.modules.desktop.apps.prismlauncher.enable {
+    home-manager.users.${user}.home.packages = [ pkgs.prismlauncher ];
+
+    registry.window-icon.${config.networking.hostName}.prismlauncher = {
+      class = "PrismLauncher";
+      icon = util.glyph "f11b";
+    };
+  };
+}