GH-4119 LMDB store in Workbench

[hmottestad]

GitHub issue resolved: #4119

Briefly describe the changes proposed in this PR:

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PR Author Checklist (see the contributor guidelines for more details):

• my pull request is self-contained
• I've added tests for the changes I made
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[hmottestad]

@kenwenzel you can try this out by checking out my branch and going to the docker directory and running ./build.sh followed by docker-compose up -d and then go to http://localhost:8080/rdf4j-workbench.

[hmottestad]

@jeenbroekstra i want to merge the changes that allow the LMDB store to be created from the workbench, since I thought that this had already been included in RDF4J 4.1.0 so I put it in the release announcement.

The other changes, which are more performance related I'll retarget to 4.2.0 together with config options in the workbench for LMDB and SHACL/RDFS/etc.

[abrokenjester]

@jeenbroekstra i want to merge the changes that allow the LMDB store to be created from the workbench, since I thought that this had already been included in RDF4J 4.1.0 so I put it in the release announcement.

Sounds good. I had a glance at the PR and it looks legit. Have you had a chance to run the changes in the workbench and check that it works?

The other changes, which are more performance related I'll retarget to 4.2.0 together with config options in the workbench for LMDB and SHACL/RDFS/etc.

👍

[hmottestad]

Yeah. I use the docker script to run it up. Works well.