flux-jobs: support getting cwd

Problem: The job-list module now supports retrieving a jobs current
working directory, but flux-jobs does not support it.

Solution: Support getting a job's current working directory through
a new "cwd" field.

Author: chu11

src/bindings/python/flux/job/info.py

@@ -281,6 +281,7 @@ class JobInfo:
         "duration": 0.0,
         "expiration": 0.0,
         "name": "",
+        "cwd": "",
         "queue": "",
         "ntasks": "",
         "ncores": "",
@@ -559,6 +560,7 @@ def job_fields_to_attrs(fields):
         "state_single": ("state",),
         "state_emoji": ("state",),
         "name": ("name",),
+        "cwd": ("cwd",),
         "queue": ("queue",),
         "ntasks": ("ntasks",),
         "ncores": ("ncores",),
@@ -641,6 +643,7 @@ class JobInfoFormat(flux.util.OutputFormat):
         "state_single": "S",
         "state_emoji": "STATE",
         "name": "NAME",
+        "cwd": "CWD",
         "queue": "QUEUE",
         "ntasks": "NTASKS",
         "ncores": "NCORES",