update roblox camera rotation when exiting first person

fixed 1 frame glitch of wrong camera rotation when entering first person, added cvar roblox_cam_look_camera_more if set faces character where camera is looking in vehicles (possibly more cases in the future), made roblox_cam_maxdist a Float, fixed check for singleplayer, improved camera raycast filters, fixed accidental dependency on DLib, fixed physgun rotation mode (only in first person so far), possibly more...

fixed check on shiftlock when roblox_cam_dist was between 0 and 1

last update fixed bug that made camera scroll 2 units when requested to scroll 1, added cvar roblox_cam_dist_step and made it 2 by default to reproduce behavior before fix, made roblox_cam_dist compatible with float units

scrolling with camera respects cvar roblox_cam_dist change from outside roblox camera

move towards input instead of velocity, improve networking and high ping shooting

use key and spawnmenu make player face camera too, so to use correct objects and spawn objects on correct places

multiplayer character look direction updates before shooting in PlayerBindPress now, so shots hit the first time

fix shiftlock, improve networking, min zoom distance is now further

m_yaw ignores sv_cheats