Added new TempJobAllocator

Added new AllocationHandle property in Stack.Scope.

Changed the ref AllocationHandle constructor parameter to AllocationHandle on of all UnsafeCollection types
Removed Allocator.Stack. Use Stack.Scope.AllocationHandle to allocate on stack instead.

Misaki.HighPerformance.Test/UnitTest/Collections/TestUnsafeStack.cs

@@ -1,10 +1,5 @@
 using Misaki.HighPerformance.LowLevel.Buffer;
 using Misaki.HighPerformance.LowLevel.Collections;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Misaki.HighPerformance.Test.UnitTest.Collections;