feat: time systems added

Engine.Systems/Time/TickerBehaviour.cs

@@ -0,0 +1,38 @@
+namespace Syntriax.Engine.Systems.Time;
+
+public class TickerBehaviour : StopwatchBehaviour, ITicker
+{
+    public event ITicker.TickerTickEventHandler? OnTick = null;
+
+    public double TickPeriod { get; set; } = 1f;
+    public int TickCounter { get; private set; } = 0;
+
+    private double nextTick = 0f;
+
+    public override void StopwatchStart()
+    {
+        TickCounter = 0;
+        base.StopwatchStart();
+        nextTick = Time + TickPeriod;
+    }
+
+    protected override void OnUpdate()
+    {
+        base.OnUpdate();
+
+        if (Time < nextTick)
+            return;
+
+        nextTick += TickPeriod;
+        TickCounter++;
+        OnTick?.Invoke(this);
+    }
+
+    protected override void OnFinalize()
+    {
+        base.OnFinalize();
+
+        TickCounter = 0;
+        nextTick = 0f;
+    }
+}