feat(user): add email apis and new enums for metadata (#3053)
Co-authored-by: Rachit Naithani <rachit.naithani@juspay.in>
Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>
Co-authored-by: Rachit Naithani <81706961+racnan@users.noreply.github.com>
