Bulk actions Re: upsertRows

Whe trying to use

```
tablesDB.upsertRows(....)
```

I'm greeted with.....

> upsertRows is not a function

Is this by design or is the package missing these methods?

Start at the tablesDB.upsertRows(...) entry point in the TypeScript SDK and inspect how TablesDB methods are exposed. Compare the package's available methods with the reported missing function; done means the intended API behavior is established and the package either provides the method or clearly confirms that it is not supported.

Written by the indexing model from the issue text.