Upgrade dependencies and add products schema (#24)

1.8 MB increase in sandboxed runtime. `@zenfs` upgrades avoided as there
were API and test breaking changes. TypeScript and vitest upgrades.
TypeScript and vitest upgrades avoided for better compatibility with
polyrepo.

Before:
![esbuild github io_analyze_
(1)](https://github.com/reddit/play/assets/1071806/69739297-b1cc-40a7-af59-3b32b67dc358)

After (note sandboxed runtime grows and unsandboxed remains fixed):
![esbuild github
io_analyze_](https://github.com/reddit/play/assets/1071806/9e05cd01-d0bf-415e-a812-d9262393133f)

Smoketested a hello world app.