Autocomplete (select) and SearchBar (suggest, then search) functionalities should be optimized

[jusa3]

See https://github.com/zbmed/semlookp-ui/issues/20

[jusa3]

https://github.com/ts4nfdi/terminology-service-suite/tree/feat/autocomplete-groups

The OLS select endpoint does not provide satisfying results. Add grouping of search results to show select and search endpoint results together. Not recommended for merge because:

• no distinction between select an search results during rendering possible - same representation (with breadcrumb widget and description)
• large blank space in the group name because the options cannot be set to individual line heights

Related to https://github.com/zbmed/semlookp-ui/issues/20 and #179

[jusa3]

https://github.com/ts4nfdi/terminology-service-suite/tree/feat/autocomplete-custom-groups

Native EUI groups don't allow for different render (without breadcrumb widget and description). Custom group labels can be differently rendered. But no automatic grouping - and sorting inside the component is not feasible.

Related to https://github.com/zbmed/semlookp-ui/issues/20 and #179