Added title screen sound, added sound when mousing over menu links, update "required" Ruby version to 3.0+ in README

lib/ext/element.rb

@@ -0,0 +1,13 @@
+module CyberarmEngine
+  class Element
+    alias enter_original enter
+
+    def enter(_sender)
+      if @block && is_a?(CyberarmEngine::Element::Link)
+        get_sample("#{IMICFPS::GAME_ROOT_PATH}/static/sounds/ui_hover.ogg").play
+      end
+
+      enter_original(_sender)
+    end
+  end
+end