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[rbren]

End-user friendly description of the problem this fixes or functionality that this introduces

• Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below
  CHANGELOG: A message is shown every time the agent runs a command

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Give a summary of what the PR does, explaining any non-trivial design decisions

This shows a chat message every time the agent takes an action, including running commands, python, and reading and writing files (the latter two don't really seem to happen--I think the agent always uses python)

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At first the message says e.g. "running a bash command", but changes to "ran a bash command" once the output is observed

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Link of any specific issues this addresses

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To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:ab35d60-nikolaik   --name openhands-app-ab35d60   docker.all-hands.dev/all-hands-ai/openhands:ab35d60