Add CanReadFile support to all readers and importers

[mwestphal]

Is your feature request related to a problem? Please describe. VTK provides an API to use to identify if a file can be read by a reader/importer, but it is not fully implemented in all readers/importers. Also this API currently exists only with files, stream support should be added as well.

List of readers/importers:

• [ ] vtkF3DAlembicReader
• [ ] vtkF3DAssimpImporter
• [ ] vtkF3DDracoReader
• [ ] vtkHDFReader: Exists but to improve and add stream support
• [x] ̶v̶t̶k̶E̶x̶o̶d̶u̶s̶I̶I̶R̶e̶a̶d̶e̶r̶ (not supported by Exodus)
• [ ] vtk3DSImporter
• [ ] vtkCityGMLReader
• [ ] vtkDICOMImageReader: Exists but add stream support
• [ ] vtkGLTFImporter
• [ ] vtkMetaImageReader: Exists but add stream support
• [ ] vtkNrrdReader: Exists but add stream support
• [ ] vtkOBJImporter
• [ ] vtkPLYReader: Exists but add stream support
• [ ] vtkPTSReader
• [ ] vtkSTLReader
• [ ] vtkTIFFReader: Exists but add stream support
• [x] vt̶k̶V̶R̶M̶L̶I̶m̶p̶o̶r̶t̶e̶r (skip)
• [ ] vtkPDataSetReader: Exists but add stream support
• [ ] vtkXML*Reader: Exists but add stream support
• [ ] vtkF3DSplatReader
• [ ] vtkF3DQuakeMDLImporter
• [ ] vtkF3DSPZReader
• [ ] vtkF3DOCCTReader
• [ ] vtkF3DUSDImporter
• [ ] vtkOpenVDBReader: Exists but add stream support

List of image reader:

• [ ] vtkImageReader2: Add API
• [ ] vtkJPEGReader:
• [ ] vtkPNGReader:
• [ ] vtkTGAReader:
• [ ] vtkHDRReader:
• [ ] vtkBMPReader:
• [x] Others: Ignore

Describe the solution you'd like

1. Select one of the reader/importer above, some are in VTK, some are in F3D
2. Comment here so we know you are working on a specif reader/importer
3. Implement CanReadFile(const char* fname)
4. Implement CanReadFile(vtkResourceStream* stream)
5. Add tests
6. Contribute the feature to F3D/VTK