New license rule for AGPL or GPL

[pombredanne]

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.