Check LICENSE for third party code that we copy

[fpaul-1A]

          Maybe you should disable linter for this file as it is a fork of an open source code?
          BTW, do they provide a license allowing the copy without author mention?
          Maybe the warning regarding the fact it is a copy should be on the first lines of this file

Originally posted by @kpanot in https://github.com/AmadeusITGroup/otter/pull/1732#discussion_r1680749388

We need to check for the code that we copy paste from other repositories to modify on our side if the LICENSE allows it and under what conditions Most likely, we need to copy their LICENSE inside our repo