Ability to load work pattern types and work pattern template through HDL

We are doing the analysis for work pattern which will be replaced with work schedule in future (No ETA yet), what we have observed that in the current scenario we don't have feasibility to load work pattern template and work pattern types via HDL. In the current business object it only support Work Pattern, Work Pattern Shift and Work Pattern Break.

We don't have option currently to have any Business objects related to work pattern template and work pattern types which we use to define the setup before creating the work pattern.

Appreciate if we can get any leads how we can load work pattern template and types through HDL.