feat: add prompt for generating repo.md for an arbiratry repo

[xingyaoww]

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

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

Sharing the prompt for generating a repo.md file for the arbitrary repository.

This is not yet fully working due to: All-Hands-AI/openhands-aci#44

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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:da0c5b6-nikolaik   --name openhands-app-da0c5b6   docker.all-hands.dev/all-hands-ai/openhands:da0c5b6

[neubig]

Hey @xingyaoww , this is exciting. It'd also be nice to have the usage of this script documented here: https://docs.all-hands.dev/modules/usage/prompting/microagents-repo

[xingyaoww]

@neubig we actually haven't implement these task prompts yet 😓 just hoping to put this in until we implement this in the FE (eg. render task prompt from these file)

[xingyaoww]

This prompt is working now that All-Hands-AI/openhands-aci#44 fixes are merged and updated to OpenHands main.

[neubig]

LGTM!