Access control: FGAC for team sync endpoints (#44673) (#44856)

* add actions for team group sync

* extend the hook to allow specifying whether the user is external

* move user struct to type package

* interface for permission service to allow mocking it

* reuse existing permissions

* test fix

* refactor

* linting

(cherry picked from commit 602d62ebcc)

Co-authored-by: Ieva <ieva.vasiljeva@grafana.com>

pkg/services/accesscontrol/database/database_test.go

@@ -5,7 +5,6 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-
 	"github.com/stretchr/testify/require"
 
 	"github.com/grafana/grafana/pkg/models"
@@ -81,7 +80,7 @@ func TestAccessControlStore_GetUserPermissions(t *testing.T) {
 			user, team := createUserAndTeam(t, sql, tt.orgID)
 
 			for _, id := range tt.userPermissions {
-				_, err := store.SetUserResourcePermission(context.Background(), tt.orgID, user.Id, accesscontrol.SetResourcePermissionCommand{
+				_, err := store.SetUserResourcePermission(context.Background(), tt.orgID, accesscontrol.User{ID: user.Id}, accesscontrol.SetResourcePermissionCommand{
 					Actions:    []string{"dashboards:write"},
 					Resource:   "dashboards",
 					ResourceID: id,