Bulk actions for Token Management

## What?

Add the ability to perform bulk actions on tokens, such as deleting more than one token at a time.

## Why?

With the introduction of Graylog Cluster level token management, this exposes just how many tokens exist in a Graylog cluster. However, to clean these up and delete them, one must delete each token one at a time. This is cumbersome and time consuming.

## Your Environment

* Graylog Version: 6.2.2
* OpenSearch Version: Data Node 6.2.2 (OpenSearch 2.15)
* MongoDB Version: 7.0.20
* Operating System: Ubuntu Server 22.04 LTS
* Browser version: Google Chrome Version 137.0.7151.56 (Official Build) (arm64)