Add interim LLM policy

Needs some further discussion, but code generated by LLMs is unlikely to be accepted.

Author: poVoq

docs/development/README.md

@@ -17,3 +17,7 @@ When submitting a PR, it's expected that:
 - you have successfully run `go fmt` on the codebase
 - you have successfully run `golangci-lint` on the codebase
 - you have updated the corresponding bridge/protocol docs in `docs/protocols`
+
+## LLM usage (interim policy)
+
+PRs generated by LLMs will not be accepted and we require disclosure of any LLM usage.