SubmittingPatches: add section about AI

As more and more developer tools use AI, we are facing two main risks
related to AI generated content:

  - its situation regarding copyright and license is not clear,
    and:

  - more and more bad quality content could be submitted for review to
    the mailing list.

To mitigate both risks, let's add an "Use of Artificial Intelligence"
section to "Documentation/SubmittingPatches" with the goal of
discouraging its blind use to generate content that is submitted to
the project, while still allowing us to benefit from its help in some
innovative, useful and less risky ways.

Helped-by: Rick Sanders <rick@sfconservancy.org>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: chriscool

Documentation/SubmittingPatches

@@ -446,6 +446,34 @@ highlighted above.
 Only capitalize the very first letter of the trailer, i.e. favor
 "Signed-off-by" over "Signed-Off-By" and "Acked-by:" over "Acked-By".
 
+[[ai]]
+=== Use of Artificial Intelligence (AI)
+
+The Developer's Certificate of Origin requires contributors to certify
+that they know the origin of their contributions to the project and
+that they have the right to submit it under the project's license.
+It's not yet clear that this can be legally satisfied when submitting
+significant amount of content that has been generated by AI tools.
+
+Another issue with AI generated content is that AIs still often
+hallucinate or just produce bad code, commit messages, documentation
+or output, even when you point out their mistakes.
+
+To avoid these issues, we will reject anything that looks AI
+generated, that sounds overly formal or bloated, that looks like AI
+slop, that looks good on the surface but makes no sense, or that
+senders don’t understand or cannot explain.
+
+We strongly recommend using AI tools carefully and responsibly.
+
+Contributors would often benefit more from AI by using it to guide and
+help them step by step towards producing a solution by themselves
+rather than by asking for a full solution that they would then mostly
+copy-paste. They can also use AI to help with debugging, or with
+checking for obvious mistakes, things that can be improved, things
+that don’t match our style, guidelines or our feedback, before sending
+it to us.
+
 [[git-tools]]
 === Generate your patch using Git tools out of your commits.