Wall lights now require light bulbs. (#151)

* Adds light_tube.rsi

Sprites taken from CEV Eris!

* Adds LightBulbComponent

* Wall lights now use light bulbs!

* Light bulb now updates its sprite when it changes.

* Comments the code.

* Adds license and copyright to new sprites

Resources/Textures/Objects/light_tube.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
+                ]
+            ]
+        }
+    ]
+}