New license rule for AGPL or GPL

from @pabs3 see:
- https://github.com/eloqdata/eloqkv/blob/main/LICENSE

> This software is provided under a dual license. You may choose to use it under the terms of either:
>
> 1. GNU General Public License, Version 2 (GPLv2), or
> 2. GNU Affero General Public License, Version 3 (AGPLv3).
>
> You may use, copy, modify, and distribute this software under the terms of either license, at your option. The full text of both licenses is included below for reference.
>