feat: added WaitForTask yield

Engine.Core/Systems/Yields/WaitForTaskYield.cs

@@ -0,0 +1,35 @@
+using System.Threading.Tasks;
+
+using static Engine.Core.WaitForTaskYield;
+
+namespace Engine.Core;
+
+public class WaitForTaskYield(Task task, TaskCompletionStatus completionStatus = TaskCompletionStatus.Either) : ICoroutineYield
+{
+    public bool Yield()
+    {
+        switch (completionStatus)
+        {
+            case TaskCompletionStatus.Successful:
+                if (task.IsCanceled)
+                    throw new("Task has been canceled.");
+                if (task.IsFaulted)
+                    throw new("Task has faulted.");
+                return task.IsCompletedSuccessfully;
+
+            case TaskCompletionStatus.Failed:
+                if (task.IsCompletedSuccessfully)
+                    throw new("Task was completed successfully.");
+                return task.IsFaulted;
+        }
+
+        return task.IsCompleted;
+    }
+
+    public enum TaskCompletionStatus
+    {
+        Either,
+        Successful,
+        Failed
+    }
+}