Dump circuits to `.dot` or some other graph format.

<a href="https://github.com/ryzhyk"><img src="https://avatars.githubusercontent.com/u/8323135?v=4" align="left" width="96" height="96" hspace="10"></img></a> **Issue by [ryzhyk](https://github.com/ryzhyk)**
_Wed Jan  5 16:50:41 2022_
_Originally opened as https://github.com/vmware/database-stream-processor/issues/12_

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