[nifticlib] fix installation of cmake config files

[autoantwort]

Fixes #29371 (comment).
Now the following is emitted:

nifticlib provides CMake targets:

    # this is heuristically generated, and may not be correct
    find_package(NIFTI CONFIG REQUIRED)
    target_link_libraries(main PRIVATE NIFTI::znz NIFTI::niftiio)

[MonicaLiu0311]

Fixes #29371 (comment). Now the following is emitted:

nifticlib provides CMake targets:

    # this is heuristically generated, and may not be correct
    find_package(NIFTI CONFIG REQUIRED)
    target_link_libraries(main PRIVATE NIFTI::znz NIFTI::niftiio)

After using your modification, the generated usage is as follows, which is slightly different from the usage you mentioned above, but both usages pass the test (the header file is found):

nifticlib provides CMake targets:

    # this is heuristically generated, and may not be correct
    find_package(NIFTI CONFIG REQUIRED)
    target_link_libraries(main PRIVATE NIFTI::znz NIFTI::nifti2 NIFTI::niftiio NIFTI::nifticdf)

[autoantwort]

@MonicaLiu0311 Why is this marked https://github.com/microsoft/vcpkg/labels/requires%3Aauthor-response? You have installed a different set of features and therefore get a different usage text. This is expected behaviour.