Link account id with the external user store (#184)

* 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

management/cmd/management.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"github.com/wiretrustee/wiretrustee/management/server"
 	"github.com/wiretrustee/wiretrustee/management/server/http"
+	"github.com/wiretrustee/wiretrustee/management/server/idp"
 	"github.com/wiretrustee/wiretrustee/util"
 	"net"
 	"os"
@@ -68,7 +69,11 @@ var (
 				log.Fatalf("failed creating a store: %s: %v", config.Datadir, err)
 			}
 			peersUpdateManager := server.NewPeersUpdateManager()
-			accountManager := server.NewManager(store, peersUpdateManager)
+			idpManager, err := idp.NewManager(*config.IdpManagerConfig)
+			if err != nil {
+				log.Fatalln("failed retrieving a new idp manager with err: ", err)
+			}
+			accountManager := server.NewManager(store, peersUpdateManager, idpManager)
 
 			var opts []grpc.ServerOption