Add detailed_job_info

Here, I add the command to retrieve the `detailed_job_info`, which wasn't
implemented before. This caused jobs run with HQ have no
information about the job in their attributes.
The `hq job info <id>` command is used and transformed into a one-line
JSON string using jq. This string is stored in the attributes and can be
transformed into a proper dictionary using `json.loads`.

aiida_hyperqueue/scheduler.py

@@ -252,6 +252,16 @@ def _parse_joblist_output(self, retval: int, stdout: str,
                 job_info_list.append(job_info)
 
         return job_info_list
+
+    def _get_detailed_job_info_command(self, job_id):
+        """Return the command to run to get the detailed information on a job,
+        even after the job has finished.
+
+        The output text is just retrieved, and returned for logging purposes.
+        `jq` is used to transform the json into a one-line string.
+        """
+        return f"hq job info {job_id} --output-mode json | jq -c ."
+
 
     def _get_kill_command(self, jobid):
         """