Story (Required)

the most basic function. API to allow UI to create chat session

_with the work done in https://issues.redhat.com/browse/DEVAI-132_

move the working backend code and create a new backend plugin for it.

the code will need to be converted to routing API, which follow design doc for /v1/query: https://docs.google.com/document/d/1nzW-crxBZoayWDWlZbtk0q6bmWFPy9qJ8Yun_zNOvRk/edit#heading=h.25xpl866izc8

the work for this issue also involves introduce test code for route.js

and also manual testing with frontend. investigate & changes need to be made on frontend code to ensure backend API can be called with no issues.

Background (Required)

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current frontend with basic implementation, which already contain the chat prompt: https://github.com/janus-idp/backstage-plugins/pull/1889/files

a draft backend PR: https://github.com/janus-idp/backstage-plugins/pull/1988/files

Out of scope

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Approach (Required)

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Dependencies

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Acceptance Criteria (Required)

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documentation updates (design docs, release notes etc)
demo needed
SOP required
education module update (Filled by DEVHAS team only)
R&D label required (Filled by DEVHAS team only)

Done Checklist

Code is completed, reviewed, documented and checked in
Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
Continuous Delivery pipeline(s) is able to proceed with new code included
Customer facing documentation, API docs, design docs etc. are produced/updated, reviewed and published
Acceptance criteria are met
If the Grafana dashboard is updated, ensure the corresponding SOP is updated as well