Change Base Path of UI and Swagger UI

[HansG89]

When running a basyx application on another resource name then "/" it is not possible to open the /ui and /swagger pages because they are trying to load their static files from "/"

example

service inside kubernetes:
http://aas-registry-service.basys.svc.cluster.local:4999

service outside kubernetes:
http://localhost:8080/registry

behaviour

opening the UI under http://localhost:8080/registry/ui serves a site without all static files

expected behaviour

it should be possible to set a "base path" for the UI and Swagger UI to be able to relatively load static files