Scaffold FE structure for work items

Merged Natalia Tepluhina requested to merge 334807-view-a-feature-detail-page into master

What does this MR do?

This MR implements a part of #334807 (closed) - here, we create a placeholder route to render Vue application and added a feature flag to use later.

How to setup and validate locally (strongly suggested)

  1. Enable the feature flag
    Feature.enable(:work_items)
  2. Visit any project work items page such as http://127.0.0.1:3000/flightjs/flight/-/work_items

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

Does this MR contain changes to processing or storing of credentials or tokens, authorization and authentication methods or other items described in the security review guidelines? If not, then delete this Security section.

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team

Related to #334807 (closed)

Edited by Natalia Tepluhina