Add initial game code

scripts/GameObjects/Star.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+
+public partial class Star : GameObject
+{
+    public enum SpectralClassType
+    {
+        O = 0, B = 1, A = 2, F = 3, G = 4, K = 5, M = 6
+    }
+
+    public SpectralClassType SpectralClass { get; private set; }
+    public long Diameter { get; private set; }
+
+    public List<GameObject> GameObjects { get; private set; }
+
+    public Star(string name, CoordinateVector position, GameObject parent, SpectralClassType spectralClass, long diameter)
+        : base(name, position, new CoordinateVector(0, 0), parent)
+    {
+        this.SpectralClass = spectralClass;
+        this.Diameter = diameter;
+
+        this.GameObjects = new List<GameObject>();
+    }
+
+    public override void Simulate()
+    {
+        base.Simulate();
+
+        foreach (GameObject gameObject in this.GameObjects)
+        {
+            gameObject.Simulate();
+        }
+    }
+}