Merge branch 'dmishunov/message-temp-poc' into 'master'

Added the new "Comment Temperature" AI feature

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/174067



Merged-by: Nicolas Dular <ndular@gitlab.com>
Approved-by: Alex Buijs <abuijs@gitlab.com>
Approved-by: Nicolas Dular <ndular@gitlab.com>
Reviewed-by: Gosia Ksionek <mksionek@gitlab.com>
Reviewed-by: Denys Mishunov <dmishunov@gitlab.com>
Reviewed-by: Nicolas Dular <ndular@gitlab.com>
Co-authored-by: Denys Mishunov <dmishunov@gitlab.com>