Merge branch '469653-vulnerability-code-flow-P4' into 'master'

Create components for highlighting vulnerability source code

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/158521



Merged-by: Jacques Erasmus <jerasmus@gitlab.com>
Approved-by: Jacques Erasmus <jerasmus@gitlab.com>
Reviewed-by: Jacques Erasmus <jerasmus@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Chen Charnolevsky <ccharnolevsky@gitlab.com>
Co-authored-by: Chen Charnolevsky <ccharnolevsky@gitlab.com>