ExtraLife: P82122

[Updates]

- Added Loading Screen

- Fixed Intro Scene Lag(May Lag Still On Lower End Devices)

- Implemented Extra Life PowerUP

- Added Tutorial Video Back In

[Bugs]

- (Reported By: PhiL, Main Dev) Game Lags On Start Up Sequence. Progress: Semi Fixed (Still May Lag On Lower End Devices)

- (Reported By: PhiL) Game May Lag When Spawning Many Bullets: Fixed (Reason: Some Browsers Lag When Loading Heavy WebGL Content. Firefox: small bit of lag Chrome: lag free Edge: lags when spawning the first bullet and fine after)