COMP: Fix VTK configuration errors.

[jhlegarreta]

Fix VTK configuration errors.

Fixes:

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkRenderingVolume' component is 'RenderingVolume'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkIOGeometry' component is 'IOGeometry'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkIOLegacy' component is 'IOLegacy'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkIOImage' component is 'IOImage'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkInteractionWidgets' component is
  'InteractionWidgets'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Deprecation Warning at
C:/SDKs/VTK/vtk-head-Bin/lib/cmake/vtk-8.90/vtk-config.cmake:57 (message):
  The new name for the 'vtkInteractionImage' component is 'InteractionImage'
Call Stack (most recent call first):
  C:/SDKs/VTK/vtk-head-Bin/vtk-config.cmake:1 (include)
  CMakeLists.txt:15 (find_package)

CMake Error at CMakeLists.txt:20 (include):
  include called with wrong number of arguments.  include() only takes one
  file.

raised when configuring the module against ITK and VTK master.

[jhlegarreta]

This makes the module get configured locally.

The changes in this PR got inspired from PR 731 in ITK and PR 778 in ITK.

Not sure the changes are correct/the best fit for the module's needs, though:

• VTK's configuration steps were supposed to simply the CMakeLists.txt file, but the mentioned approaches seem to complicate the ITK side. May be because ITK is halfway between.
• Not sure whether this will make the module be incompatible with VTK pre-8.9.

A few VTK-related linking errors are raised when building. Not sure if when PR 778 in ITK gets merged these will be fixed.

Finally, in any case, if we get to configure the module correctly and get the VTK linking errors fixed in this PR, the module will not build due to the SpatialObject changes (addressed in #33).

@schmidje @phcerdan @thewtex can we cast some light about this ?

Thanks.

[jhlegarreta]

As in PR #33, CDash CI build errors are again due to the ITKVtkGlue module flag not being set to ON in the CMake configuration:
https://open.cdash.org/viewConfigure.php?buildid=5880043

CMake Error at /ITK/CMake/ITKModuleAPI.cmake:78 (message):
  No such module: "ITKVtkGlue"