Prompt Execution via PER Agent

[rcho93]

Description

Plan_Execute_Reflect agent goes through planning, executing, and reflecting phases, which requires multiple prompts.

Example PER agent execution below:

POST _plugins/_ml/agents/your_agent_id/_execute?async=true
{
  "parameters": {
    "question": "How many flights from Beijing to Seattle?",
    "planner_prompt_template": "your_planner_prompt_template",
    "planner_prompt": "your_planner_prompt",
    "reflect_prompt_template": "your_reflect_prompt_template",
    "reflect_prompt": "your_reflect_prompt",
    "planner_with_history_template": "your_planner_with_history_template",
    "system_prompt": "your_planner_system_prompt",
    "executor_system_prompt": "your_executor_system_prompt"
  }
}

With this integration, user can simply store group of prompts into one prompt object:

POST _plugins/_ml/prompts/_create
{
   "name": "promptGroup",
   "prompt": 
   {
       "planner": <your-planner-prompt>, 
       "system": <your-planner-prompt>, 
       "reflect": <your-planner-prompt>, 
       "executor_system": <your-planner-prompt>, 
   }
}

And access this prompt during execution time using following pull_prompt syntax:

POST _plugins/_ml/agents/your_agent_id/_execute?async=true
{
  "parameters": {
    "question": "How many flights from Beijing to Seattle?",
    "prompt_group": "pull_prompt(prompt_id)
  }
}

You can also filter out usable prompts from this group of prompts by:

POST _plugins/_ml/agents/your_agent_id/_execute?async=true
{
  "parameters": {
    "question": "How many flights from Beijing to Seattle?",
    "prompt_group": "pull_prompt(prompt_id, [planner, system])
  }
}

Related Issues

Resolves #[Issue number to be closed when this PR is merged]
#3711

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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