Improve spacetime build for typescript

[coolreader18]

Description of Changes

This fixes the confusing error encountered by @gefjon:

$ spacetime publish -s local --module-path spacetimedb --no-config event-table-test-ts
Rolldown warning: Could not resolve 'spacetimedb/server' in spacetimedb/src/index.ts
Error: Your module doesn't import the `spacetimedb/server` package at all - this is likely a mistake, as your module will not be able to interface with the SpacetimeDB host.

After:

[UNRESOLVED_IMPORT] Error: Could not resolve 'spacetimedb/server' in src/index.ts
   ╭─[ src/index.ts:1:47 ]
   │
 1 │ import { schema, table, t, SenderError } from 'spacetimedb/server';
   │                                               ──────────┬─────────  
   │                                                         ╰─────────── Module not found.
   │ 
   │ Help: You may have forgotten to install dependencies with your package manager.
───╯

And also runs tsc, so that modules with type errors aren't silently published. Perhaps we want a --skip-tsc so that people can run anyway and get runtime errors?

Expected complexity level and risk

2

Testing

• Ensured that tsc and rolldown errors are properly emitted.

[cloutiertyler]

Beautiful! This is a great fix.