Combo migration

Steps to migrate the current way of combining chains in parallel.

• use the same HypoAlg for all chains that use the same sequence
• define legs and build one HypoTool per leg for that HypoAlg
• let the Filter pass the leg IDs

Test in the emulation code with one chain is ok. When more chains are added that use the same HypoAlg but have different filter, there are multiple inputs to the same HypoAlg, which is not able to accept them (one RH only). There are different solutions:

• merge the Dec handles in the InputMaker (InputMaker will be more important in the flow)
• add RHArray in the HypoAlg base, which makes the Hypo more complicated

Tagging @tamartin, @tbold

Linking ATR-19751 (Catrin)