enh: Flatten lists in mirtk.run opts arguments [Applications]
enh: Flatten lists in mirtk.run opts arguments [Applications]

schuhschuh/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,schuhschuh/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK