Enable use of SWIG 4.0 for CMake build
Enable use of SWIG 4.0 for CMake build

So far restricted to swig3

AMICI-developer/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI,FFroehlich/AMICI,FFroehlich/AMICI,AMICI-developer/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI