Add infrastructure section to LINKS

Author: tomschr

LINKS.md

@@ -7,12 +7,17 @@ This document lists some links that may be helpful for this project.
 * [Design Patterns, Architectures & Idioms in 24 Languages](https://softwarepatternslexicon.com)
 * [Design Patterns](https://refactoring.guru/design-patterns/)
 
+## Infrastructure
+
+* [PEX](https://docs.pex-tool.org)
+
 ## Async I/O
 
 * [Python's asyncio: A Hands-On Walkthrough](https://realpython.com/async-io-python/)
 * [joblib](https://joblib.readthedocs.io)
 
 ## Task Queues
+
 * [Taskiq](https://taskiq-python.github.io)
 
 ## Tests