feat: Support retry for 'Chat Data'

[fangyinc]

Description

In some scenarios, we need to call the LLM in parallel, select the successful result, or retry in case of failure.

How Has This Been Tested?

1. Modify .env

# Non-streaming scene retries
DBGPT_APP_SCENE_NON_STREAMING_RETRIES_BASE=2
# Non-streaming scene parallelism
DBGPT_APP_SCENE_NON_STREAMING_PARALLELISM_BASE=2

2. Restart DB-GPT
3. Use "Chat Data" to perform some error-prone problems, and you will find that the success rate increases.

Snapshots:

Include snapshots for easier review.

Checklist:

• My code follows the style guidelines of this project
• I have already rebased the commits and make the commit message conform to the project standard.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules

[csunny]

r+

[Aries-ckt]

r+

[chuangzhidan]

# Non-streaming scene retries
DBGPT_APP_SCENE_NON_STREAMING_RETRIES_BASE=2
# Non-streaming scene parallelism
DBGPT_APP_SCENE_NON_STREAMING_PARALLELISM_BASE=2

supports chat_data in scene of chat_db autoexcute?
error feedback will be included and feed back to llm?