feat: support cross-db query in frontend and meta

[yezizp2012]

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What's changed and what's your intention?

Related #19631 .

1. enable support for cross-database binding in batch operations, create_mv, and create_sink.
2. check db CONNECT privilege for cross-db query.
3. Integrated cross-db snapshot backfill executor, and address issues in metadata validation.
4. reject drop mv/sink cascade with cross-db upstreams.
5. verify the existence of log stores for all cross-db upstreams in the DDL.

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

Documentation

• My PR needs documentation updates.

Release note

Support cross-db query for both batch and streaming. The current requirements include:

1. There is at least one subscription created on the upstream table or materialized view.

2. The user is super or has connect permissions for the upstream databases and must also have the corresponding relation's query permissions.

[wenym1]

Rest LGTM!

We may need more tests for recovery, scale and background ddl. Not necessary to include in this PR.

[github-actions]

Hi, there.

📝 Telemetry Reminder:
If you're implementing this feature, please consider adding telemetry metrics to track its usage. This helps us understand how the feature is being used and improve it further.
You can find the function report_event of telemetry reporting in the following files. Feel free to ask questions if you need any guidance!

• src/frontend/src/telemetry.rs
• src/meta/src/telemetry.rs
• src/stream/src/telemetry.rs
• src/storage/compactor/src/telemetry.rs
  Or calling report_event_common (src/common/telemetry_event/src/lib.rs) as if finding it hard to implement.
  ✨ Thank you for your contribution to RisingWave! ✨

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[wenym1]

LGTM!

Shall we add a release note to announce this new feature, and mention that currently user need to create a subscription on the table and should not drop the subscription?