Udata-schema-gouvfr

- Link to datasets with the same schema from the schema modal [4](https://github.com/etalab/udata-schema-gouvfr/pull/4)

- Add a job to set the `schema` attribute to the IRVE schema on multiple resources [3](https://github.com/etalab/udata-schema-gouvfr/pull/3)

Initial release