[Experimental] [SMBX2] Beep Block Rainbow Rhythm

NOTE: This is an experimental level, and since this is using custom Beep Blocks by Emral, the level has a tendency to desync when unfocusing the SMBX window or pausing the game via the editor pause menu. As heavy testing is conducted, we'll see how this level develops from there once necessary measures are done. A similar level in 2k1x Subzero Heroes uses Beep Blocks, which still sync to the music regardless if the game is paused or if the game window is focused and unfocused. Tileset by AwesomeZack (SMB3 wood) and me (Beep Blocks). Music composed by me, titled "Dance to the Beat" (originally for Cyon of Gaia).