projects: refactor resource

* Refactors the entire resource and manages it with `invenio-records-resources`.
* Moves specific configuration for SONAR to the top level directory.
* Moves SONAR extension to the top level directory.
* Serializes `id` property for `deposits` and `documents` resources.

Co-Authored-by: Sébastien Délèze <sebastien.deleze@rero.ch>

.gitignore

@@ -73,7 +73,7 @@ target/
 # Generated JSON schemas
 sonar/modules/documents/jsonschemas/documents/document-v1.0.0.json
 sonar/modules/deposits/jsonschemas/deposits/deposit-v1.0.0.json
-sonar/modules/projects/jsonschemas/projects/project-v1.0.0.json
+sonar/resources/projects/jsonschemas/projects/project-v1.0.0.json
 
 # Generated JSON files
 data/backups/