feat: add rchabin to reviewers

[rchabin]

As an engineering manager, I'm not sure if in your typology I should belong both to frontend and backend teams but this is what seems the more accurate to me.

[reviewflow]

Options:

• 🚦 automerge: Automatically merge when this PR is ready and has no failed statuses. When the repository requires branches to be up to date before merging, it merges default branch, with a queue per repo to prevent multiple merges when several PRs are ready. A fail job prevents the merge.
• 🚦 skip-ci: Add [skip ci] on merge commit when merge is done with autoMerge.
• ♻️ Automatically delete the branch after this PR is merged.

[christophehurpeau]

Sorry I did not saw this PR ! I don't think you should be in either group, they should match github's team (and will be synced with github's teams one day)