-block allocator now track allocated blocks and is able to free memory

-jobs data is now allocated in System struct
-written memory cleanup (AddressSanitizer don't show any leak)

source/ecs/system.d

@@ -97,7 +97,7 @@ package:
     int m_pass;
 
     ///system name
-    const(char)[] name;
+    char[] name;
 
     ///required components
     ushort[] m_components;