add deps fig to README

README.md

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 ### What is VOPy?
 VOPy is an open-source Python library built to address noisy black-box vector optimization problems, where the user preferences are encoded with a cone order.
 
+<p align="center">
+  <img src="docs/source/_static/vopy_deps.jpg" alt="Overview of the dependencies, core modules, and built-in algorithms of VOPy" width="600px">
+</p>
+
 ### What to do with VOPy?
 VOPy includes several pre-implemented algorithms, models, orders, and problems from the literature for black-box vector optimization, allowing users to select and utilize components based on their specific needs. Specifically, you can:
 - Using existing methods for novel problems