Cmake modernization

[LecrisUT]

This should be moved into the main netcdf-c project, ensuring the library versions are equivalent

[WardF]

These were split off after netcdf 4.1.3, and it is unlikely they will be recombined.

[LecrisUT]

Then please re-open as a mirror issue to Unidata/netcdf-c#2713. And in addition to those points:

• make netcdf-c a submodule dependency
• add an organization wide github workflow
• synchronize or delegate one library to have the main cmake files (defining macros and so on)

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I believe there are more disadvantages in keeping these organized as individual repositories and much more CI complexity to be designed and maintained than there is advantages. Is there a discussion for the split off decision to be read and can it be reconsidered in light of the advances of the build system tools?

[LecrisUT]

@WardF, please re-open this issue because this is still relevant with the comments linked to the C library. Why is the fortran interface namespaced as netCDF::netcdft? It should be netCDF::Fortran or equivalent.

netcdf-fortran/fortran/CMakeLists.txt

Lines 210 to 211 in 5f02e6a

	INSTALL(TARGETS netcdff netcdff_c
	EXPORT netcdffTargets