feat(schema) add a relation to input file to import process

cubicweb_rodolf/migration/0.1.2_Any.py

+add_relation_definition("ImportProcess", "has_input_dataset", "File")

cubicweb_rodolf/schema.py

@@ -65,6 +65,7 @@
         "ImportProcedure", cardinality="1*", inlined=True
     )
     rq_task = SubjectRelation("RqTask", cardinality="11", inlined=True)
+    has_input_dataset = SubjectRelation("File", cardinality="??", inlined=True)
     has_output_dataset = SubjectRelation("File", cardinality="??", inlined=True)
     import_report = SubjectRelation("File", cardinality="??", inlined=True)
     shacl_valid = Boolean()