B2OC: Add 16 B2DDH Spruce lines (shifters PLEASE ignore)

The following decays are added:

In b_to_ddh.py:

B+ -> D- D_s+ pi+

B+ -> D*(2010)- D_s+ pi+

B0 -> D0bar D_s+ pi-

B0 -> D0bar D+ pi-

B0 -> D*(2010)+ D*(2010)- K*(892)0

B0 -> D0 D~0 KsLL

B0 -> D0 D~0 KsDD

B+ -> D~0 D_s+ K+ K-

B0 -> D0 D~0 K+ K-

B0 -> D+ D- K+ K-

B0 -> D_s+ D- K+ K-

B0 -> D_s+ D_s- K+ K-

B0 -> D_s+ D*(2010)- K+ K-

B0 -> D*(2010)+ D*(2010)- K+ K-

In b_to_cbaryon_hh.py:

B+ -> Lc+ Lcbar- K+

In bbaryon_to_lightbaryon_dd.py:

Lambda_b0 -> D0 D_s- p+

Add a particle merger

make_dstar_to_dzeropi_cf() in d_d_builder.py , D*+ builder which only provide Cabibbo favor D*->D0pi decays.