Basic Main menu, other cool stuff

So, what I did in this release of the Demo was I added a very basic main menu, new sound effects for the enemy, a raycast for the player so that when they are crouching under something and you release the crouch button, they don't bug out and I made it so that if you just off of a level, you just get sent back to the beginning of the level, instead of restarting it. (I will probably change some of these in the future.)

Also, I would like to note that: Once I get level one complete, I will not be pushing any more playable updates to this platform, as I plan to one day (hopefully) put this game on steam, and if the full game were available on here for free, then that would kinda make putting on steam really unnecessary. To help me put it on steam, you guys can donate if you want! Honestly, you really do not need to though, as I cannot offer anything in return for your kindness.