Refactor CtSaving ZBuffer

See merge request !154

* Cleaner ZBuffer empty state: add _isValid and _setInvalid
* Include headers for memory allocation and copy
* Rename _takeBuffer to _takeBuffers
* Remove inappropriate call to std::move with _takeBuffers' return

NXmeasurement does not exist. Use NXcollection.

See merge request !152

CtControl.h: fix project_version.h include directory

See merge request !151

h5bitshuf with submodules

See merge request !149

* Include both BUILD and INSTALL interfaces, used when
  compiling with or without LIMA_BUILD_SUBMODULES, respectively

Resolve "stopAcq() makes hdf5 saving corrupted the last file"

Closes #101

See merge request !144

CMake: install BitShuffle headers together with h5bshuf, used by Eiger

See merge request !147

Fix HW saving when acq_nb_frames is not a multiple of FramesPerFile

See merge request !145

CMake: fix FindNuma: NUMA_ROOT_DIR is not required

See merge request !146

Resolve "HDF5 fix path for data"

Closes #99

See merge request !143

- Added two Nexus attributes to file, NXroot and creator. Creator attribute is LIMA-<version>
- Add CtControl::getVersion() that returns Lima-core version (from git)

Add downstream test (running simulator tests)

See merge request !118

check if hdf5 attribute exists before creating it

See merge request !142

fix  #109

Use more explicit variable name in CtControl::newImageSaved

See merge request !141