Add SolidJS integration with docs quickstart

This issue tracks reimplementing the work from stale PR #4495, which has been closed because it is too far out of date to merge directly.

Original pull request

• PR #4495: Add SolidJs integration
• Original author: @DanielBaumert

What the original PR was trying to do

Description of Changes Add support for SolidJs API and ABI breaking changes None Expected complexity level and risk Complexity level: 1 Risk level: 1 Testing - [x] Runned "npm run build" from "../crates/bindings-typescript/package.json" - [ ] Add test-app

Closure context

• @DanielBaumert This would have to come with a quickstart guide in the docs. You can see what those look like here: https://spacetimedb.com/docs/quickstarts/react

I'm going to close this PR for now, but feel free to reopen if you'd still like to see this merged.

Reimplementation notes

• Reimplement this work on top of current master in a new PR.
• Keep the original PR linked as historical context and as a source of useful implementation ideas where still relevant.

Review stale PR #4495 for prior SolidJS integration ideas, then inspect the current bindings in ../crates/bindings-typescript/package.json and the existing React quickstart at https://spacetimedb.com/docs/quickstarts/react. Run the original npm run build check and add a SolidJS quickstart; done means the current integration builds and the documentation covers its setup.