feat: Add audit logging (#38189)

Co-authored-by: bircni <bircni@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

services/externalaccount/user.go

@@ -8,10 +8,12 @@ import (
 	"strconv"
 	"strings"
 
+	audit_model "gitea.dev/models/audit"
 	issues_model "gitea.dev/models/issues"
 	repo_model "gitea.dev/models/repo"
 	user_model "gitea.dev/models/user"
 	"gitea.dev/modules/structs"
+	"gitea.dev/services/audit"
 
 	"github.com/markbates/goth"
 )
@@ -46,6 +48,9 @@ func LinkAccountToUser(ctx context.Context, authSourceID int64, user *user_model
 		return err
 	}
 
+	audit.RecordAs(ctx, user, audit_model.UserExternalLoginAdd, user,
+		"external_id", externalLoginUser.ExternalID, "provider", externalLoginUser.Provider)
+
 	externalID := externalLoginUser.ExternalID
 
 	var tp structs.GitServiceType