added code from unity

Runtime/InGameLogger.cs

@@ -0,0 +1,36 @@
+using System.Runtime.CompilerServices;
+
+namespace Jovian.InGameLogging {
+    public readonly struct InGameLogger {
+        private readonly IGameLogStore store;
+        private readonly LogChannel channel;
+
+        public InGameLogger(IGameLogStore store, LogChannel channel) {
+            this.store = store;
+            this.channel = channel;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Log(string message) {
+            store.Add(channel, message);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Log(string message, string hexColor) {
+            var prefix = hexColor.Length > 0 && hexColor[0] == '#' ? "" : "#";
+            store.Add(channel, $"<color={prefix}{hexColor}>{message}</color>");
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Enable() {
+            store.EnableChannel(channel);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Disable() {
+            store.DisableChannel(channel);
+        }
+
+        public bool IsEnabled => store.IsChannelEnabled(channel);
+    }
+}