Add GameState serialize from default regression test

RLBotCSTests/BallPrediction.cs

@@ -1,5 +1,5 @@
 using Bridge.Models.Phys;
-using Bridge.Packet;
+using Bridge.State;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using RLBotCS.ManagerTools;
 
@@ -13,17 +13,17 @@ public void TestBallPred()
         {
             BallPredictor.SetMode(PredictionMode.Standard);
 
-            var currentBall = new Ball()
-            {
-                Physics = new Physics(
-                    new Vector3(0, 0, 100),
-                    new Vector3(600, 600, 100),
-                    new Vector3(1, 2, 0.5F),
-                    new Rotator(0, 0, 0)
-                )
-            };
+            var packet = new GameState();
+            BallPredictor.Generate(PredictionMode.Standard, 1, packet.Ball);
 
-            var ballPred = BallPredictor.Generate(PredictionMode.Standard, 1, currentBall);
+            packet.Ball.Physics = new Physics(
+                new Vector3(0, 0, 100),
+                new Vector3(600, 600, 100),
+                new Vector3(1, 2, 0.5F),
+                new Rotator(0, 0, 0)
+            );
+
+            var ballPred = BallPredictor.Generate(PredictionMode.Standard, 1, packet.Ball);
 
             int numSlices = 8 * 120;
             Assert.AreEqual(numSlices, ballPred.Slices.Count);

RLBotCSTests/GameState.cs

@@ -0,0 +1,20 @@
+using Bridge.State;
+using Google.FlatBuffers;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using RLBotCS.Conversion;
+
+namespace RLBotCSTests
+{
+    [TestClass]
+    public class TestGameState
+    {
+        [TestMethod]
+        public void Test()
+        {
+            var packet = new GameState();
+
+            FlatBufferBuilder build = new(1024);
+            packet.ToFlatBuffers(build);
+        }
+    }
+}