Add spack package for TVB (tvb-library and tvb-data)
First version of spack packaging for the tvb-library (TVB simulator code) and tvb-data (demo data used by tvb-library).
Spack specs:
spack install tvb-data
spack install tvb-library^binutils+ld+gold%gcc@10.3.0
The variant ^binutils+ld+gold is needed for llvm library brought by py-numba - which is a direct dependency of tvb-library.
Any suggestions are welcome.