docs: add egghead banner to readme

README.md

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-> [!IMPORTANT]\
 > **MSW 2.0 is finally here! 🎉** Read the [Release notes](https://github.com/mswjs/msw/releases/tag/v2.0.0) and please follow the [**Migration guidelines**](https://mswjs.io/docs/migrations/1.x-to-2.x) to upgrade. If you're having any questions while upgrading, please reach out in our [Discord server](https://kettanaito.com/discord).
+>
+> We've also recorded the most comprehensive introduction to MSW ever. Learn how to mock APIs like a pro in our official video course:
+
+<a href="https://egghead.io/courses/mock-rest-and-graphql-apis-with-mock-service-worker-8d471ece?af=8mci9b" target="_blank">
+  <img src="media/egghead-banner.png" alt="Mock REST and GraphQL APIs with Mock Service Worker" />
+</a>
 
+<br />
 <br />
 
 <p align="center">
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+<br />
+
 ## Features
 
 - **Seamless**. A dedicated layer of requests interception at your disposal. Keep your application's code and tests unaware of whether something is mocked or not.