* [x] Rework AuthCheck queries in nextcound and onedrive.
* [x] Rename to UserQuery.
* [x] Respond with user data on success
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Emit event after Begin of the insertionFetchService obtains a tokenEnd of the insertion Begin of the deletion TokenExchangeEnd of the deletion
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Subscribe to the event
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Issue UserQuery and update RemoteIdentity with username.
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Remote Identities are tied to a pair of User + OAuthClient. Updating it might need to make this association polymorphic allowing for OAuthClient or OIDC IdP values.