Function setUser

setUser(context: Context, user: User): Context
Sets the user ID in the given OpenTelemetry context.
Parameters
- context: Context
  The context to set the user ID on.
- user: User
  The user to set on the context.
Returns Context
The context
Example
```
context.with(
  setUser(context.active(), { userId: "user-123" }),
  () => {
    // Spans created here will have user ID attribute
  }
);
```
- Defined in packages/openinference-core/src/trace/contextAttributes.ts:236