Adding AI code review

.hal9000-review.json

@@ -0,0 +1,4 @@
+{
+    "model":"code-review-default",
+    "prompt":"The current working directory has a codebase (${workdir}).  Do a review of the changes and see how it makes sense (or not) tying into the rest of the system.  Try and understand fully how all affected systems work before rendering your review.  MAKE SURE TO READ ALL FILES FROM THE DISK to see if the changes tie into the system well.\nHe wants to do a pull from ${pr_head} to ${base_branch}.  These are the relevant commits:\n${patch_log}"
+}