Rework directory structure

experimental/ulo/scripts/isabelle-prepare-file.sh

experimental/ulo/scripts/reset-libraries.sh

experimental/ulo/scripts/virtuso/build_virtuoso.sh

...lo/scripts/virtuso/import-recursive-xz-rdf-to-virtuoso.sh

experimental/ulo/ulo-owl

experimental/ulo/ulo-used.txt

main.go

src/ulocollect/collecter.go

src/ulocollect/dummy_importer.go

src/ulocollect/file_system_collecter.go

src/ulocollect/go.mod

src/ulocollect/go.sum

src/ulocollect/importer.go

src/ulocollect/iri_fix_importer.go

src/ulocollect/iri_fix_importer_test.go

src/ulocollect/job_id.go

src/ulocollect/job_info.go

src/ulocollect/job_state.go

src/ulocollect/local_scheduler.go

src/ulocollect/package.go