Create version objects on LDES Server, Mandate ldes:timestampPath

[xdxxxdx]

Describe the bug

1. An LDES Server up and running: ldes/ldes-server:2.12.0-SNAPSHOT
2. The stream bearb is configured as follow:

   
   @prefix ldes:    <https://w3id.org/ldes#> .
   @prefix tree:    <https://w3id.org/tree#>.
   @prefix dcterms: <http://purl.org/dc/terms/> .
   @prefix prov:    <http://www.w3.org/ns/prov#> .
   @prefix sh:      <http://www.w3.org/ns/shacl#> .

a ldes:EventStream ; tree:shape [ a sh:NodeShape ] ; ldes:timestampPath dcterms:created ; ldes:createVersions true ; ldes:versionOfPath dcterms:isVersionOf .

3. Ingest state member of `bearb` to the LDES Server which doesn't contain `dcterms:created ` => The member is ingested and categorized to **`unknown` fragmentation**, as `dcterms:created` has not been added to the member.

**Expected result**
I think the `  ldes:timestampPath` should be created for any predict configured by  `ldes:timestampPath` when the ` ldes:createVersions` enabled.
Otherwise, we cannot reject the member if the member contains the `ldes:timestampPath` path.

[xdxxxdx]

Configuration issue