wrapper generator: add treatment of parameter class

- methods taking a parameter class are called by **kw
- the dict is passed to the C++
- the converters for the parameters are generated.
[gfs] clean tail clean, k->tail. Test curry + fourier

- clean tail, add tail_const_view
- add m_tail for x -> tail on any mesh
- update g(k,omega) test.
- test curry + fourier works on k
mctools : remove parameters