STYLE: Change enum to new enum class definition
STYLE: Change enum to new enum class definition

Changed to enum class: FileModeType

Module: Modules_AnisotropicDiffusionLBR

InsightSoftwareConsortium/ITKAnisotropicDiffusionLBR,InsightSoftwareConsortium/ITKAnisotropicDiffusionLBR,InsightSoftwareConsortium/ITKAnisotropicDiffusionLBR