MADS: Show the current scene when using "scene" without params
MADS: Add detection entries for Dragonsphere and Phantom

Also, disable the unsupported compressed Rex version for now
MADS: Set Rex to start from scene 101, like the original

There's a temporary hack to skip showing Rex's standing up animation
cause it takes ages to finish
MADS: Add skeleton classes for Phantom and Dragonsphere
MADS: Add initial support for V2 backgrounds and hotspots

V2 games include Phantom and Dragonsphere. OUAF hasn't been tested yet
MADS: Handle the missing sections in Phantom and Dragonsphere
MADS: Hook up the new skeleton scene logic for Phantom and Dragonsphere

Also, add a HACK to stub out the sprite refresh code for these games,
as sprites aren't loaded yet
MADS: Add a HACK to reuse the Nebular dialog class for now for V2 games

There aren't any dialogs shown yet for these games, we just reuse the
implemented class to avoid crashes when it's initialized
MADS: Disable the hotspot description code for V2 games

This doesn't quite work yet, and it causes crashes, thus it has been
disabled for now for these games