https://bungie-net.github.io/multi/operation_get_Destiny2-GetLinkedProfiles.html#operation_get_Destiny2-GetLinkedProfiles
- Seems this endpoint was added and this is better than manually searching endpoints for matching membershipIds.
- Update our OAUTH sign in and selection page to leverage this endpoint so you can pivot on accounts owned by user.
- This will help fix outdated information, since my profile still shows XBOX/BLIZZARD, when it should be XBOX/STEAM (cross)