Full Update for V2.3

This is the second part of V2.3, and nothing much was added. First part: https://seenwonderalex.itch.io/baldis-basics-tud/devlog/519973/v229-partial-upda...

Here are the changes:

• ADDED CHALLENGE MODES (Speedy and stealthy), the last challenge mode will be held off to V3. 
• Fixed an issue on some mobile devices not being able to touch the 3D movement toggle.
• Fixed an issue where Chalkles and The Test couldn't be turned off on custom settings.
• (From the first partial update) Fixed an issue where walking to a swinging door on multiplayer would crash on the browser.
• (From the first partial update) Fixed an issue where you get stuck in the jumpscare screen on multiplayer.
• (From the first partial update) The health system was overhauled. Fall damage has increased. Teleporting from the second floor by the principal will make you take severe side-effect damage. The third floor will make you lose. You'll take damage if you're late to Mrs. Pomp's class.
• Fixed an issue where new players couldn't play any mode.
• The hideable lockers are now blue to look like BB+, now you should know hideable lockers are in the game
• Fixed a hint typo on science.
• Gravity was changed to fix the issue of players being taller.
• Added the principal whistle item.
• The stamina from the legendary apple has been decreased to 1000%
• The daily mystery door system has been rewritten. It now works when being offline and should fix any issues with it (including being over 24 hours)
• Fixed an issue where sometimes you get stuck in a loading screen.
• Occlusion culling was added. It's not stable enough, so it'll turn on when the camera distance is set to Normal or below.
• Camera distance is set to Normal by default if you're on android or a browser.
• Some things were changed for an event coming soon.