Add python-cqrs

Add python-cqrs to new CQRS & Event Sourcing section 🦄

Author: JinyangWang27

README.md

@@ -127,6 +127,7 @@ _Python implementation of data structures, algorithms and design patterns. Also
   - [sortedcontainers](https://github.com/grantjenks/python-sortedcontainers) - Fast and pure-Python implementation of sorted collections.
   - [thealgorithms](https://github.com/TheAlgorithms/Python) - All Algorithms implemented in Python.
 - Design Patterns
+  - [python-cqrs](https://github.com/vadikko2/python-cqrs) - Event-Driven Architecture Framework with CQRS/CQS, Transaction Outbox, Saga orchestration.
   - [python-patterns](https://github.com/faif/python-patterns) - A collection of design patterns in Python.
   - [transitions](https://github.com/pytransitions/transitions) - A lightweight, object-oriented finite state machine implementation.