feat: Mention UHEI/pynn-brainscales2…

Author: muffgaga

content/neuromorphic-computing/software/snn-frameworks/pynn-brainscales2/index.md

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+---
+title: "PyNN.brainscales2"
+type: neuromorphic-software
+description: Spiking neural networks with complex plasticity on BrainScaleS-2 neuromorphic hardware.
+website: https://electronicvisions.github.io/documentation-brainscales2/latest/
+dependencies: PyNN, BrainScaleS-2 OS
+field_of_application: Neuromorphic Hardware, Computational Neuroscience, Spiking Neural Networks, Local Plasticity
+source_code: https://github.com/electronicvisions/pynn-brainscales
+license: LGPL-2.0-or-later
+supports_hardware: True
+supports_NIR: False
+language: Python
+draft: false
+---
+
+## Overview
+
+**PyNN.brainscales2** is an implementation of the backend-agnostic PyNN API for BrainScaleS-2.
+It supports arbitrary topologies, and complex plasticity rules.