VectoCoreTest: Added global NUnit Configuration (Parallelizable) and for trial...

VectoCoreTest: Added global NUnit Configuration (Parallelizable) and for trial runs during debugging: LevelOfParallelism, Timeout

VectoCore/VectoCoreTest/NUnitConfiguration.cs

+using NUnit.Framework;
+[assembly: Parallelizable(ParallelScope.All)]
+//[assembly: LevelOfParallelism(4)]
+//[assembly: Timeout(1000)]
\ No newline at end of file