RDF fixes

- Update backend function call to the new BDGraph where multiple {author:orcid} can be set for a generated RDF catalog
```
def __init__(
self,
base_uri: str,
version_iri: Optional[str] = None,
title: Optional[str] = None,
description: Optional[str] = None,
# author: Optional[str] = None, ---> Not in use anymore
# orcid: Optional[str] = None, ---> Not in use anymore
creators: Optional[List[Dict[str, str]]] = None, # Use this
```
- Fix UI accordingly and document what each field means
- Implement custom prefixes for RDF graph
- ShEx are working well, but SHACL graph needs fixes:
```
biodatafuseui-2-backend-1 | 2026-02-03 10:10:12,516 - app.services.rdf_service - WARNING - ⚠️ SHACL generation failed: get_shacl_prefixes() missing 1 required positional argument: 'print_string_output
```
- Add custom namespaces for the SHACL/ShEx (currently it uses the default `weso` namespace from sheXer)
- Button to `Select another visualization tool` stops working after some step
- Explain better what the local/docker/docker bridge selection means and with which biodatafuseUI deployment type is each option applicable