meta: New backends

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Acceptance criteria: Adding new backends for the core Ibis team is not a priority, but we will support new backends from the community or organizations partnering with the Ibis project. This meta-issue for the roadmap is to track new backends for Q1 2024.

Adding new backends for popular data platforms will be a priority after #7909 and related work to stabilize the backend interface.

TODOs:

• feat: Exasol backend #8037
• feat: Apache Flink backend #8036
• feat: RisingWave backend #8038

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Weekly Update:
2024-01-18

• RisingWave backend PR is up: feat(risingwave): init impl for Risingwave ibis#7954
• Exasol backend was merged recently: feat(exasol): add exasol backend ibis#7303
• Apache Flink backend is in and receiving improvements: flink Issues or PRs related to Flink

(copying over last week's update on behalf of myself)

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Weekly Update:
2024-01-25

• RisingWave backend is still in progress
• no other new backends planned at this time

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Weekly Update:
2024-02-01

• RisingWave backend merged

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no update or new backends planned this quarter; will update if that changes

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chDB in progress #8497

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closing out from last quarter