Add hiring banner to README (#2179)

* Update README.md to include Job Description

* Add source

README.md

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   <a href="https://join.slack.com/t/soda-community/shared_invite/zt-m77gajo1-nXJF7JtbbRht2zwaiLb9pg"><img alt="Slack" src="https://img.shields.io/badge/chat-slack-green.svg"></a>
   <a href="#"><img src="https://static.pepy.tech/personalized-badge/soda-core?period=total&units=international_system&left_color=black&right_color=green&left_text=Downloads"></a>
 </p>
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+<hr />
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+> [!IMPORTANT]  
+> **🚀 We're hiring! Are you passionate about open-source and love working on projects like Soda Core? Join our team as a Software Engineer and help shape the future of data quality tools. [Apply now!](https://careers.soda.io/o/software-engineer-data-testing-python-data-engineering-mediorsenior?source=gh-core)**
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+<hr />
 
 &#10004;  An open-source, CLI tool and Python library for data quality testing<br />
 &#10004;  Compatible with the <a href="https://docs.soda.io/soda-cl/soda-cl-overview.html" target="_blank">Soda Checks Language (SodaCL)</a>  <br />