Optimize the display format of `gsctl desc`.

[zhanglei1949]

Currently the output is not beatified.

detail:
  graph_id: '2'
  process_id: 1595804
end_time: '2024-07-04 11:27:12'
id: '1'
log: "WARNING: Logging before InitGoogleLogging() is written to STDERR\nI0704 11:27:12.024127\
  \ 1595804 loader_factory.cc:66] Registering loader: file, format:csv\nI0704 11:27:12.025439\
  \ 1595804 schema.cc:1140] Parse schema version: v0.0\nI0704 11:27:12.025728 1595804\
  \ schema.cc:574] prop--1 name: id type: int64 strategy: \nI0704 11:27:12.025779\
  \ 1595804 schema.cc:574] prop-0 name: released type: int32 strategy: \nI0704 11:27:12.025806\
  \ 1595804 schema.cc:574] prop-1 name: tagline type: string strategy: \nI0704 11:27:12.025828\

[github-actions[bot]]

/cc @zhanglei1949 @lidongze0629, this issus/pr has had no activity for for a long time, could you folks help to review the status ? To suppress further notifications,

• for issues,
  • if it is waiting for further response from the reporter/author, please help to add the label requires-further-info,
  • if you have already started working on it, please add the label work-in-progress to the issue,
  • if this issue requires further designing discussion and not in current plan, or won't be fixed, please add the label requires-further-discussion or wontfix to the issue,
• for pull requests,
  • if you are still working on it and it is not ready for reviewing, please convert this pull request as draft PR,
  • if you have decided to hold this development on, please add the requires-further-discussion label to the pull request. Thanks!