Lots of updates and bug fixes!

• Complete rewrite of player control synchronization
• Fix enemy HP handling on clients
• Hide UI elements during cutscenes
• Prevent navigation near objects in a certain area
• Certain enemies now properly attack client players
• A certain enemy is now processed correctly on clients
• Players now prevented from standing in a very bad place
• Reduce sudden darkness near early-game areas
• Better handling of certain in-game friends
• ...and loads of quality-of-life fixes behind the scenes!