feat: Tests + first draft

https://github.com/zazuko/barnard59-rdf/issues/30

test/metadata/produceProv.test.js

@@ -35,6 +35,7 @@ const snapshot = `<https://example.org/user/pipeline> <http://www.w3.org/1999/02
 <https://example.org/user/pipeline/-/pipelines> <http://example.org/contains> <https://example.org/user/pipeline/-/pipelines/36212> .
 <https://example.org/user/pipeline/-/commit/30dd92dc282586159c8d4401d26262351f7228e0> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/Commit> .
 <https://example.org/user/pipeline/-/commit/30dd92dc282586159c8d4401d26262351f7228e0> <http://example.org/triggered> <https://example.org/user/pipeline/-/pipelines/36212> .
+<https://example.org/user/pipeline/-/commit/30dd92dc282586159c8d4401d26262351f7228e0> <http://schema.org/name> "I added the commit title" .
 <https://example.org/user/pipeline/-/commit/30dd92dc282586159c8d4401d26262351f7228e0> <http://example.org/author> "User <[email protected]>" .
 <https://example.org/user/pipeline/-/commit/30dd92dc282586159c8d4401d26262351f7228e0> <http://www.w3.org/ns/prov#atTime> "2023-03-14T12:24:50+01:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
 <https://example.org/user/pipeline/-/pipelines/36212> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/PipelineRun> .

test/support/gitlabEnvironment.js

@@ -9,6 +9,7 @@ const mockEnvironment = {
   GITLAB_USER_LOGIN: 'user',
 
   CI_COMMIT_AUTHOR: 'User <[email protected]>',
+  CI_COMMIT_TITLE: 'I added the commit title',
   CI_COMMIT_TIMESTAMP: '2023-03-14T12:24:50+01:00',
   CI_COMMIT_SHA: '30dd92dc282586159c8d4401d26262351f7228e0',
   CI_PIPELINE_URL: 'https://example.org/user/pipeline/-/pipelines/36212',