Clear JIT cache on exit (#1518)

* Initial cache memory allocator implementation

* Get rid of CallFlag

* Perform cache cleanup on exit

* Basic cache invalidation

* Thats not how conditionals works in C# it seems

* Set PTC version to PR number

* Address PR feedback

* Update InstEmitFlowHelper.cs

* Flag clear on address is no longer needed

* Do not include exit block in function size calculation

* Dispose jump table

* For future use

* InternalVersion = 1519 (force retest).

Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>

ARMeilleure/Memory/ReservedRegion.cs

@@ -49,5 +49,10 @@ namespace ARMeilleure.Memory
                 }
             }
         }
+
+        public void Dispose()
+        {
+            Block.Dispose();
+        }
     }
 }