feat: make createDataProvider take an rqlClient as input

The rqlClient is used so often that we can expect it to be available when creating the data provider.

packages/demo/src/App.tsx

@@ -18,6 +18,7 @@ import {
   SimpleShowLayout,
   DataProvider,
 } from "react-admin";
+import { client } from "@logilab/cwclientlibjs";
 import { createDataProvider } from "ra-cubicweb/dist";
 
 import { schema } from "./schema";
@@ -81,7 +82,10 @@ export const CityShow = (props: ShowProps) => (
   </Show>
 );
 
-const dataProvider = createDataProvider("http://localhost:8080", schema);
+const httpClient = new client.CwSimpleHttpClient("http://localhost:8080", true);
+const rqlClient = new client.CwRqlClient(httpClient);
+
+const dataProvider = createDataProvider(rqlClient, schema);
 dataProvider.getList("toto", {
   pagination: { page: 1, perPage: 10 },
   sort: { field: "id", order: "ASC" },