feat: Add DQL support

[pvditto]

Adds support for DQL (see online documentation) by adding two new hooks: useQuery() and useExecuteQuery().

Also adds a new example app based on the new DQL hooks at examples/dql-create-react-app-typescript-example.

The minimum supported version of @dittolive/ditto changes to 4.8.1.

Usage

A quick overview, refer to the API reference for more details.

The useQuery() hook immediately sets up a store observer and sync subscription for a given query. This hook only supports non-mutating DQL syntax.

 const { items } = useQuery(
   'select * from tasks where _id = :id limit 10', {
     queryArguments: { id: '123' },
   }
 )

The useExecuteQuery() hook returns a function that can be called to execute a query on demand, e.g. for mutating data.

```tsx
const [executeQuery] = useExecuteQuery(
  'insert into tasks documents (:task)',
  {
    queryArguments: { task: { author: 'Alice' } },
  },
)

// Clicking the button will execute the query with query arguments
// `{ task: { author: 'Alice', description: 'Buy milk' } }`.
return <button
 onClick={() => executeQuery({ task: { description: 'Buy milk' } })}
>Add Task</button>