[Task]: Enforce absolute imports for frontend

[acouch]

Summary

The frontend is currently using a mix of relative and absolute imports. This task is to update the frontend imports to use absolute paths. Additionally we should add a relative path setting of src/ so that absolute imports become component/Footer instead of src/components/Footer.

If there is a reason not to use absolute imports, there should at least be a consistent approach across the frontend, and this ticket can be used to document that.

Acceptance criteria

• [ ] config updated and absolute import paths enforced
• [ ] check if we can add this to the linter
• [ ] update docs if deemed necessary (if there is a linter than that could be considered self-documenting)

[acouch]

I added this to search ui fast follow but it could be considered longer-term frontend enhancement work.