Update Package structure

Misaki.HighPerformance.Jobs/JobExecutionContext.cs

@@ -0,0 +1,20 @@
+namespace Misaki.HighPerformance.Jobs;
+
+public readonly ref struct JobExecutionContext
+{
+    public int ThreadIndex
+    {
+        get;
+    }
+
+    public IJobScheduler JobScheduler
+    {
+        get;
+    }
+
+    public JobExecutionContext(int threadIndex, IJobScheduler jobScheduler)
+    {
+        ThreadIndex = threadIndex;
+        JobScheduler = jobScheduler;
+    }
+}