Hook to play sound

[Reika]

Ideally with control over surface, force, position, et cetera. Not using fake entities, not using other hacks. Just game.play_sound(surfaces={...}, forces={...}, position={}) or similar.

[Rseding91]

I've added a way to play sounds for 0.16.

• Added LuaSurface::play_sound().
• Added LuaForce::play_sound().
• Added LuaGameScript::play_sound() and is_valid_sound_path().
• Added LuaPlayer::play_sound().