Is your feature request related to a problem?

opening for tracking purposes, work in progress in #7954

Describe the solution you'd like

a RisingWave backend to use Ibis for streaming data w/ RisingWave, a postgres-compatible streaming data platform

What version of ibis are you running?

n/a

What backend(s) are you using, if any?

n/a

Code of Conduct

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