docs: Add Ask DeepWiki badge to README (#2685)

This pull request adds the 'Ask DeepWiki' badge to the repository's
README file.

### Purpose
The badge provides a direct and convenient link for users and
contributors to ask questions and get information about this codebase
via DeepWiki, improving the repository's overall supportability and
accessibility.

### Automation Context
This change was applied via an automated script to ensure consistency
across multiple repositories. No other files or functional code have
been modified.

Author: arpit-jn

README.md

@@ -3,6 +3,7 @@
 ![Downloads](https://img.shields.io/npm/dw/auth0-lock)
 [![License](https://img.shields.io/:license-mit-blue.svg?style=flat)](https://opensource.org/licenses/MIT)
 [![Build Status](https://github.com/auth0/lock/actions/workflows/test.yml/badge.svg)](https://github.com/auth0/lock/actions/workflows/test.yml)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/auth0/lock)
 
 > :warning: Lock is built using React 18 from v12 onwards. Getting issues? Please [submit a bug report](https://github.com/auth0/lock/issues/new?assignees=&labels=bug+report,v12&template=report_a_bug.md&title=).
 
@@ -137,4 +138,4 @@ Please do not report security vulnerabilities on the public GitHub issue tracker
 </p>
 <p align="center">
   This project is licensed under the MIT license. See the <a href="https://github.com/auth0/lock/blob/master/LICENSE"> LICENSE</a> file for more info.
-</p>
+</p>