New API Proposal - Q&A Assistant - Service (from "MaaS" API family)

[lihaojie-CMCC]

Proposal to create a "Q&A Assistant - Service" API:

This API is based on the already built Q&A Assistant application, providing Q&A services to the users of the application. Users input prompts with questions they want to know, and the Q&A application returns answers based on the large model and knowledge base.

Based on the established Q&A Assistant, this API supports the Q&A Assistant in providing Q&A services to application users.

This API provide services to the users of the Q&A Assistant.

Related to #84

[jgarciahospital]

Pending to create repo