add libver log file to archive folder about cytolib

[mikejiang]

@gfinak , I ended up recording the lib info in the protobuf file at c++ level.
R can use verbose flag to optionally print the versions of the libraries that were used to archive the GatingSet

 gs <- load_gs(tmp, verbose = TRUE)
The GatingSet was archived by:
cytolib: 1.9.8
protobuf: 3010000
HDF5: 1.10.5

[gfinak]

This is really useful, thanks.