Jena integration – add support for content negotiation

[Ostrzyciel]

Issue: #136 #164

This will safely fall-back when running on Fuseki 5.1.0, which does not implement the interface we are using here:

20:41:57 INFO  Server          :: Fuseki Module: JellyFusekiModule
20:41:57 WARN  Server          :: Cannot register the application/x-jelly-rdf content type, because you are running an Apache Jena Fuseki version that doesn't support content type registration. Update to Fuseki 5.2.0 or newer for this to work.
20:41:57 INFO  Server          :: Module: Jelly (2.0.3+5-4302b074+20241015-2022-SNAPSHOT)
20:41:57 INFO  Server          :: Apache Jena Fuseki 5.1.0

On 5.2.0 we get:

20:42:31 INFO  Server          :: Fuseki Module: JellyFusekiModule
20:42:31 INFO  Server          :: Added application/x-jelly-rdf to the list of accepted content types
20:42:31 INFO  Server          :: Module: Jelly (2.0.3+5-4302b074+20241015-2022-SNAPSHOT)
20:42:31 INFO  Server          :: Apache Jena Fuseki 5.2.0