Projectile hit sound

[Mate-86]

Enhancement of the missile hit sound handling:

1. Allow the engine playing the sound using the position only (currently an entity is needed). A new cpp function should address that in SoundManager.
2. Introduce different kind of sounds in the template:
   1. the projectile hits the target or the ground (melee hit belongs here)
   2. the projectile starts causing the damage itself (eg. explodes) (useful when the damage is delayed, related ticket: #1911)