Reimplement: websocket: send/receive reducer & table ids instead of names

[clockwork-labs-bot]

This issue tracks reimplementation of the work from stale PR #1883, which is being closed because it is too out of date to merge directly.

Original PR: https://github.com/clockworklabs/SpacetimeDB/pull/1883
Original author: @Centril
Original branch: `centril/websocket-use-ids`
Base branch: `master`

## Original PR summary

# Description of Changes

Receive and send reducer ids and table ids as opposed to names in the SDK.

TODO:

• Host implementation of the above.
• Rust SDK implement of the above.
• C# SDK implementation of the above, Companion to SpacetimeDB#1883 (ids-no-names) com.clockworklabs.spacetimedbsdk#178
• TS SDK implementation of the above

Fixes https://github.com/clockworklabs/SpacetimeDBPrivate/issues/1091.

API and ABI breaking changes

Yes.

## Follow-up

- Reimplement this change in a fresh PR against current `master`.
- Carry forward any still-relevant context from the original PR discussion and review.
- Link the new implementation PR back to the original stale PR for historical context.