refactor: renamed WaitForSeconds to a more general WaitForTime class

Engine.Core/Systems/Yields/WaitForSecondsYield.cs

@@ -1,10 +0,0 @@
-using System;
-
-namespace Engine.Core;
-
-public class WaitForSecondsYield(float seconds) : ICoroutineYield
-{
-    private readonly DateTime triggerTime = DateTime.UtcNow.AddSeconds(seconds);
-
-    public bool Yield() => DateTime.UtcNow < triggerTime;
-}

Engine.Core/Systems/Yields/WaitForTimeYield.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace Engine.Core;
+
+public class WaitForTimeYield(float seconds = 0f, float milliseconds = 0f, float minutes = 0f, float hours = 0f) : ICoroutineYield
+{
+    private readonly DateTime triggerTime = DateTime.UtcNow
+        .AddHours(hours)
+        .AddMinutes(minutes)
+        .AddSeconds(seconds)
+        .AddMilliseconds(milliseconds);
+
+    public bool Yield() => DateTime.UtcNow < triggerTime;
+}