Setup CI with deployment to crpptbx

• Setup basic crpptbx mechanism:
• There are 2 separate builds for use with libgfortran.so.3 or libgfortran.so.5:
  • build on lac.epfl.ch using local GCC 5
  • build on spc-ci.epfl.ch using local custom GCC 9 (for compatibility with lac10 which comes with GCC 9)
• Choice of binary is done at MATLAB's launch time with a test if all shared libraries can be found

Closes #2 (closed)