Revived WebGL! +Other small changes

Fixed the issue where the tutorial text would appear if you select options when in the main menu

Added a pointer in the radar that activates when the boss spawns so the player knows which direction the boss is in

Changed volume slider to be logarithmic and not linear

Notes about WebGL version: I have only tested this on Firefox, the UI might break on other browsers. Also, if you fullscreen the UI it gets broken so don't do that. I will be looking into fixing that as well. (Might get rid of the Unity wrapper that can fullscreen and use itch's fullscreen option? Will attempt to test it when I can)