Improve Agent Terminal Phase Error Message

[Future-Outlier]

Tracking issue

#3936

Why are the changes needed?

When Agent Tasks fail, we want to help users to find the bug quickly, so that it will be easier for us to identify the error from the agent server or flyte-propeller.

What changes were proposed in this pull request?

add resource.Message in all Terminal Phase. (Except for Success)

Additional Information: FlytePropeller will send task logs to FlyteAdmin when the phase changes, and FlyteConsole will show the error message sent by FlyteAdmin.

How was this patch tested?

In this PR, the chatgpt agent will return Resource(phase=TaskExecution.FAILED, message=str(error_message)) when faced with errors like Timeout Error or Authentication Error.

This PR can help users a lot with what errors they meet.

chatgpt_new_job = ChatGPTTask(
            name="chatgpt",
            openai_organization="xxx",
            chatgpt_config={
                    "model": "gpt-3.5-turbo",
                    "temperature": 0.7,
            },
        )

https://github.com/flyteorg/flytekit/blob/6c36d35dec70a4275b8477b0879a9af9fc70cbea/plugins/flytekit-openai/flytekitplugins/chatgpt/agent.py#L54

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.93%. Comparing base (bb285d6) to head (9516880).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4935   +/-   ##
=======================================
  Coverage   58.93%   58.93%           
=======================================
  Files         645      645           
  Lines       55414    55414           
=======================================
  Hits        32656    32656           
  Misses      20175    20175           
  Partials     2583     2583           

Flag	Coverage Δ
unittests	58.93% <100.00%> (ø)

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[pingsutw]

Thanks, it's extremely helpful