Improvements to multiplayer netcode, Steam invites, + a new photo mode feature!

This update features a lot of big and important backend updates and improvements to the multiplayer system, bulking everything up so that multiplayer is more capable of supporting the upcoming new game modes and more that may be added in the future. It's probably not the most fun update for you all, but it necessary work that needed to be done! But I also threw in some nice QOL features for everyone while I was at it.

New Features:

-New and improved netcode for handling vehicle movement and latency prediction

-Host players now have latency compensated movement on clients screens as well

-Added ability to directly invite Steam friends

-Added support for automatic launching/joining game from a Steam invite

-Added center point focus mode to photo mode camera, allowing you to focus on something other than your own vehicle

Changes:

-Last selected track is now retained when going back to the lobby as a host

-Increased network position data send rate for better movement syncing

-Improved network data handling and player ready states to ensure track, game mode, and other data is always sent correctly

-Tons of backend improvements, fixes, and changes in preparation for new multiplayer game modes with collision support

Bug Fixes:

-Various network movement glitches and issues resolved

-Fixed chat window text input box not wrapping text

-Fixed being able to use change camera button while in photo mode in multiplayer

-Another potential fix for rare instances of client vehicles having backwards wheels in multiplayer