Part of [Update dependencies table UI][1].

This is the largest piece that implements the new table layout. It's
behind the `dependency_list_ui` feature flag, which is currently
disabled by default. This means that the existing UI is still in place,
and unaffected.

Specifically, this:

- Reimplements the table using `GlTable` from GitLab UI
- Removes the UI tabs
- Combines the component name and version columns
- Adds a warning badge for rows with vulnerabilities
- Adds a document icon to the location column

[1]: https://gitlab.com/gitlab-org/gitlab/-/issues/195928