feat(queryRules): add connectQueryRules connector (#3597)

* feat(queryRules): add connectQueryRules connector

* chore(storybook): add support for playgrounds (#3599)

* feat(queryRules): add queryRuleCustomData widget (#3600)

Author: francoischalifour

.storybook/decorators.js

@@ -0,0 +1,85 @@
+import { action } from '@storybook/addon-actions';
+import algoliasearch from 'algoliasearch/lite';
+import instantsearch from '../src/index';
+import defaultPlayground from './playgrounds/default';
+
+export const withHits = (
+  storyFn: ({
+    container,
+    instantsearch,
+    search,
+  }: {
+    container: HTMLElement;
+    instantsearch: any;
+    search: any;
+  }) => void,
+  searchOptions: any
+) => () => {
+  const {
+    appId = 'latency',
+    apiKey = '6be0576ff61c053d5f9a3225e2a90f76',
+    indexName = 'instant_search',
+    searchParameters = {},
+    playground = defaultPlayground,
+    ...instantsearchOptions
+  } = searchOptions || {};
+
+  const urlLogger = action('Routing state');
+  const search = instantsearch({
+    indexName,
+    searchClient: algoliasearch(appId, apiKey),
+    searchParameters: {
+      hitsPerPage: 4,
+      attributesToSnippet: ['description:15'],
+      snippetEllipsisText: '[…]',
+      ...searchParameters,
+    },
+    routing: {
+      router: {
+        write: (routeState: object) => {
+          urlLogger(JSON.stringify(routeState, null, 2));
+        },
+        read: () => ({}),
+        createURL: () => '',
+        onUpdate: () => {},
+      },
+    },
+    ...instantsearchOptions,
+  });
+
+  const containerElement = document.createElement('div');
+
+  // Add the preview container to add the stories in
+  const previewElement = document.createElement('div');
+  previewElement.classList.add('container', 'container-preview');
+  containerElement.appendChild(previewElement);
+
+  // Add the playground container to add widgets into
+  const playgroundElement = document.createElement('div');
+  playgroundElement.classList.add('container', 'container-playground');
+  containerElement.appendChild(playgroundElement);
+
+  const leftPanelPlaygroundElement = document.createElement('div');
+  leftPanelPlaygroundElement.classList.add('panel-left');
+  playgroundElement.appendChild(leftPanelPlaygroundElement);
+
+  const rightPanelPlaygroundElement = document.createElement('div');
+  rightPanelPlaygroundElement.classList.add('panel-right');
+  playgroundElement.appendChild(rightPanelPlaygroundElement);
+
+  playground({
+    search,
+    leftPanel: leftPanelPlaygroundElement,
+    rightPanel: rightPanelPlaygroundElement,
+  });
+
+  storyFn({
+    container: previewElement,
+    instantsearch,
+    search,
+  });
+
+  search.start();
+
+  return containerElement;
+};