Remove Win32API calls & upgrade to modern Ruby (#96)

* Win32API removal + Ruby 3 updates
* Update binaries to match mkxp-z 2.1

Data/Scripts/001_Technical/001_MKXP_Compatibility.rb

@@ -1,8 +1,4 @@
-$MKXP = !!defined?(System)
-
-def mkxp?
-  return $MKXP
-end
+$VERBOSE = nil
 
 def pbSetWindowText(string)
   System.set_window_title(string || System.game_title)
@@ -29,4 +25,4 @@ def pbSetResizeFactor(factor)
     Graphics.scale = (factor + 1) * 0.5
     Graphics.center
   end
-end
+end