Add bullet firing logic to the sample and fix performance bottleneck caused by the logging system

Signed-off-by: MHesham <mhesham.fcis@gmail.com>
Add a couple of new features to the Bullet Sample
- Add firepower charging by holding space
- Spawn hit targets at random Z location in front of the hero
- Add world bounds to track out of world objects to remove them from the game logic

Signed-off-by: MHesham <mhesham.fcis@gmail.com>
Merge branch 'master' of https://github.com/MHesham/engiX