undo snapshot extension

Author: lucasteles

src/Backdash/Session/INetcodeSession.cs

@@ -88,6 +88,11 @@ public interface INetcodeSessionInfo
     ///     Returns the size of the current saved state.
     /// </summary>
     ByteSize CurrentStateSize => GetCurrentSavedFrame().Size;
+
+    /// <summary>
+    ///     Returns the last saved state snapshot.
+    /// </summary>
+    StateSnapshot CurrentStateSnapshot() => GetCurrentSavedFrame().ToSnapshot();
 }
 
 /// <summary>

src/Backdash/Session/NetcodeSessionExtensions.cs

@@ -48,10 +48,4 @@ static string GetStateString<T>(
         var stateObject = @this.GetHandler().CreateState(frame, ref reader);
         return parser.GetStateString(frame, in reader, stateObject);
     }
-
-    /// <summary>
-    ///     Returns the last saved state snapshot.
-    /// </summary>
-    public static StateSnapshot CurrentStateSnapshot<T>(this INetcodeSession<T> @this) where T : unmanaged =>
-        @this.GetCurrentSavedFrame().ToSnapshot();
 }