fix(react): add missing react memory router

packages/react-router/src/ReactRouter/IonReactMemoryRouter.tsx

@@ -0,0 +1,21 @@
+import { MemoryHistory } from 'history';
+import React from 'react';
+import { MemoryRouter, MemoryRouterProps, matchPath } from 'react-router';
+
+import { RouteManager } from './Router';
+
+interface IonReactMemoryRouterProps extends MemoryRouterProps {
+  history: MemoryHistory;
+}
+
+export class IonReactMemoryRouter extends React.Component<IonReactMemoryRouterProps> {
+  render() {
+    const { children, history, ...props } = this.props;
+    const match = matchPath(history.location.pathname, this.props);
+    return (
+      <MemoryRouter {...props}>
+        <RouteManager history={history} location={history.location} match={match!}>{children}</RouteManager>
+      </MemoryRouter>
+    );
+  }
+}