Add tracked image example in sequence in igs.nrrd format

Generated using Plus-2.9.0.a03ed25c - Win64 by using this command:

EditSequenceFile.exe --source-seq-file=c:\D\PlusLibData\TestImages\NwirePhantomFreehand.igs.mha --output-seq-file=c:\D\PlusLibData\TestImages\NwirePhantomFreehand.igs.nrrd --use-compression

Author: lassoan