Add services accordion in job assistant

What does this MR do and why?

This MR is a follow up of !115565 (merged), and is split from !105538 (closed)

continue to add an services accordion in the drawer.

Design Link

Screenshots or screen recordings

QQ20230407-004908-HD

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Enable the feature flag

   Feature.enable(:ci_job_assistant_drawer)

2. Visit any CI editor pages such as http://127.0.0.1:3000/root/demo/-/ci/editor?branch_name=master

3. Click the job assistant button.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

/cc @daveliu