Enhance installation process with terminal selection, update autostart commands, and add PolyForm license; remove unused AGS config

packages/hyprpaper/.config/hypr/hyprpaper.conf

@@ -1,7 +1,4 @@
+preload = ~/.config/hypr/wallpapers/wallpaper.png
+wallpaper = ,~/.config/hypr/wallpapers/wallpaper.png
 splash = false
-
-wallpaper {
-    monitor =
-    path = ~/.config/hypr/wallpapers/wallpaper.png
-    fit_mode = cover
-}
+ipc = on