Instance. UX display of thousands of child/parents relations

Overview: Improve or rethink the current display of an instance which has thousands of relations (either a child or parent with the same relation, e.g. monographic-serie).

Use case:
A typical use case is linking analyzed serials to a superordinate unit. This will create a hierarchical relationship in RDA speak. The link enables a user to
a) go from the individual part to the series record and see what other parts have been published in it
b) navigate from the series record into all linked parts that are part of a the library collection.

Real life example provided by fhemme:
Here an example of one of our larger series where we have around 13,000 child instances: https://kxp.k10plus.de/DB=2.1/PPNSET?PPN=248438735 -> click on link "related publications" to get to the parts of the working paper.

Documentation:
Ideas for implementing a search box, see slide # 8-9 in following slide deck reviewed with the App Interaction SIG (September 2022): https://docs.google.com/presentation/d/1FmSmyVH71wuvaXmQV0gu8B0zKMNm6U_h-ozegh-7-vU/edit#slide=id.g116f1226fe9_1_104