[Ready] SoundComponent (#164)

Requires https://github.com/space-wizards/space-station-14/pull/768

- [x] Play sounds
- [x] SoundSchedules actually work
- [x] Send sound to specific users
- [x] Make existing components use SoundComponent
- [x] Add ScheduledSounds from prototypes
- [x] Add Play methods equivalent to those of AudioSystem.
- [x] Document most code.

Resources/Prototypes/Entities/Lights.yml

@@ -4,6 +4,7 @@
   components:
   - type: Clickable
   - type: BoundingBox
+  - type: Sound
   - type: Sprite
     sprite: Buildings/light_tube.rsi
     state: on

Resources/Prototypes/Entities/Power.yml

@@ -95,6 +95,7 @@
       type: ApcBoundUserInterface
   - type: BoundingBox
     aabb: -0.25, -0.25, 0.25, 0.3
+  - type: Sound
 
 - type: entity
   id: SMES

Resources/Prototypes/Entities/Weapons.yml

@@ -18,6 +18,7 @@
     Size: 24
     sprite: Objects/laser_retro.rsi
     prefix: 100
+  - type: Sound
 
 - type: entity
   name: Spear

Resources/Prototypes/Entities/weapons/guns.yml

@@ -11,6 +11,7 @@
   - type: Icon
     sprite: Objects/c20r.rsi
     state: c20r-5
+  - type: Sound
   - type: RangedWeapon
     automatic: true
     firerate: 8