feat: add Claude 3.5 haiku as possible code completion model (!2137) · Merge requests · GitLab.org / ModelOps / AI Assisted (formerly Applied ML) / Code Suggestions / AI Gateway · GitLab

What does this merge request do and why?

Adds Claude 3.5 haiku as possible code completion model for Saas case, in use for https://gitlab.com/gitlab-org/gitlab/-/issues/523902

How to set up and validate locally

See gitlab-org/gitlab!184504 (merged) for testing steps

Merge request checklist

Tests added for new functionality. If not, please raise an issue to follow up.
Documentation added/updated, if needed.