Exposes endpoint under "/users/" that returns information on users.
Calls IDP manager to get information not stored locally (email, name),
which in the case of the managed version is auth0.
* Fix IDP Manager config structs with correct tags
When loading the configuration from file
we will use the Auth0ClientConfig and when
sending the post to retrieve a token
we use the auth0JWTRequest with proper tags
Also, removed the idle timeout as it was closing
all idle connections
* get account id from access token claim
* use GetOrCreateAccountByUser and add test
* correct account id claim
* remove unused account
* Idp manager interface
* auth0 idp manager
* use if instead of switch case
* remove unnecessary lock
* NewAuth0Manager
* move idpmanager to its own package
* update metadata when accountId is not supplied
* update tests with idpmanager field
* format
* new idp manager and config support
* validate if we fetch the interface before converting to string
* split getJWTToken
* improve tests
* proper json fields and handle defer body close
* fix ci lint notes
* documentation and proper defer position
* UpdateUserAppMetadata tests
* update documentation
* ManagerCredentials interface
* Marshal and Unmarshal functions
* fix tests
* ManagerHelper and ManagerHTTPClient
* further tests with mocking
* rename package and custom http client
* sync local packages
* remove idp suffix
