feat(hyprland): replace swaybg with hyprpaper

modules/home/desktop/hyprland/hyprpaper.nix

@@ -0,0 +1,21 @@
+{pkgs, ...}: {
+  services.hyprpaper = {
+    enable = true;
+
+    settings = {
+      ipc = "on";
+      splash = false;
+      splash_offset = 2.0;
+
+      preload = [
+        "~/Wallpapers/mountain.jpg"
+      ];
+
+      wallpaper = [
+        ", ~/Wallpapers/mountain.jpg"
+      ];
+    };
+  };
+
+  home.packages = with pkgs; [hyprpaper];
+}