Synapse entity generation

## 🪤 Context

UI based entity registrations. Backend will assemble entities, and provide to automation code like this

```typescript
entities.my_select.current_option = "foo"
```

## 📬 Caveats

The `synapse` entity generation tools won't be provided directly to the service for v1. There's some weirdness to sort out with continually redefining an entity, and potential memory leaks through the strange create / teardown process

## 🩻 Additional details

https://github.com/Digital-Alchemy-TS/code-glue/blob/main/apps/server/src/utils/contracts/entities.ts