Adds small lights and small light bulbs. (#156)

In the future, someone might want to edit the sprites so the bulb is white and not yellow.
Here's some screenshots:
![image](https://user-images.githubusercontent.com/6766154/54878560-d9242e80-4e2e-11e9-8fde-39ae082f34b0.png)
![image](https://user-images.githubusercontent.com/6766154/54878572-f3f6a300-4e2e-11e9-95a1-253a5504922f.png)

Content.Server/GameObjects/Components/Power/LightBulbComponent.cs

@@ -16,6 +16,7 @@ namespace Content.Server.GameObjects.Components.Power
 
     public enum LightBulbType
     {
+        Bulb,
         Tube,
     }
 

Content.Server/GameObjects/Components/Power/PoweredLightComponent.cs

@@ -187,7 +187,15 @@ namespace Content.Server.GameObjects.Components.Power
 
             if (!existed) // Insert a light tube if there wasn't any.
             {
+                switch (BulbType)
+                {
+                    case LightBulbType.Tube:
                         _lightBulbContainer.Insert(Owner.EntityManager.SpawnEntity("LightTube"));
+                        break;
+                    case LightBulbType.Bulb:
+                        _lightBulbContainer.Insert(Owner.EntityManager.SpawnEntity("LightBulb"));
+                        break;
+                }
             }
         }
     }

Resources/Maps/stationstation.yml

@@ -950,17 +950,17 @@ entities:
     pos: 4.5,-9.5
     rot: -1.570796 rad
     type: Transform
-- type: poweredlight
+- type: poweredsmalllight
   components:
   - grid: 0
     pos: -4,-7
-    rot: -1.5707963267949 rad
+    rot: 1.5707963267949 rad
     type: Transform
-- type: poweredlight
+- type: poweredsmalllight
   components:
   - grid: 0
     pos: 3,-7
-    rot: -1.5707963267949 rad
+    rot: 1.5707963267949 rad
     type: Transform
 - type: poweredlight
   components:

Resources/Prototypes/Entities/Lights.yml

@@ -47,6 +47,32 @@
     load: 40
     bulb: Tube
     
+- type: entity
+  name: Small Light
+  id: poweredsmalllight
+  parent: wall_light
+  components:
+  - type: Clickable
+  - type: BoundingBox
+  - type: Sprite
+    sprite: Buildings/light_small.rsi
+    state: off
+
+  - type: Icon
+    sprite: Buildings/light_small.rsi
+    state: off
+
+  - type: PointLight
+    energy: 1.0
+    state: Off
+
+  - type: PowerDevice
+    priority: Low
+
+  - type: PoweredLight
+    load: 40
+    bulb: Bulb
+
 - type: entity
   parent: BaseItem
   name: BaseLightbulb
@@ -69,3 +95,19 @@
   - type: Icon
     sprite: Objects/light_tube.rsi
     state: normal
+    
+- type: entity
+  parent: BaseLightbulb
+  name: Light Bulb
+  id: LightBulb
+  components:
+  - type: LightBulb
+    bulb: Bulb
+    
+  - type: Sprite
+    sprite: Objects/light_bulb.rsi
+    state: normal
+    
+  - type: Icon
+    sprite: Objects/light_bulb.rsi
+    state: normal

Resources/Textures/Buildings/light_small.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "copyright": "https://github.com/discordia-space/CEV-Eris/blob/2b969adc2dfd3e9621bf3597c5cbffeb3ac8c9f0/icons/obj/lighting.dmi", "states": [{"name": "broken", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "burned", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "empty", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "off", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "on", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}

Resources/Textures/Objects/light_bulb.rsi/meta.json

@@ -0,0 +1,44 @@
+{
+    "version": 1,
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken from https://github.com/discordia-space/CEV-Eris at commit ad7c8621e5567b1b3b2b609f699b3b80cca785f2",
+    "states": [
+        {
+            "name": "normal",
+            "select": [],
+            "flags": {},
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
+        {
+            "name": "burned",
+            "select": [],
+            "flags": {},
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
+        {
+            "name": "broken",
+            "select": [],
+            "flags": {},
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        }
+    ]
+}