doc: Add AI policy

[Hywan]

Does exactly what it says on the tin.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.59%. Comparing base (d860749) to head (7bf9448).
⚠️ Report is 41 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5879      +/-   ##
==========================================
- Coverage   88.59%   88.59%   -0.01%     
==========================================
  Files         363      363              
  Lines      102926   102926              
  Branches   102926   102926              
==========================================
- Hits        91192    91185       -7     
- Misses       7493     7500       +7     
  Partials     4241     4241              

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[codspeed-hq]

CodSpeed Performance Report

Merging #5879 will not alter performance

_{Comparing Hywan:doc-ai-policy (7bf9448) with main (aa79e34)}

Summary

✅ 50 untouched

[manuroe]

Thanks for this addition.

Should we add this change to the changelog?
I would say so at it is quite significant. We could say there that the matrix.org website is doing the same thing (matrix-org/matrix.org#2999).

[poljar]

Should we add this change to the changelog?

Hmm, changelogs are for users of the SDK while the policy is for developers.

I'm not sure users are that interested into the contributing guide or the AI policy.

[manuroe]

Should we add this change to the changelog?

Hmm, changelogs are for users of the SDK while the policy is for developers.

I'm not sure users are that interested into the contributing guide or the AI policy.

This clarification makes sense.