Add flow decomposition notebook (#8)

Signed-off-by: Hugo SCHINDLER <hugo.schindler@rte-france.com>

Author: OpenSuze

README.md

@@ -3,3 +3,4 @@
 - Substation single line diagram notebook: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/powsybl/pypowsybl-notebooks/main?labpath=single_line_diagram.ipynb)
 - CGMES merging, load flow and PTDF calculation notebook: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/powsybl/pypowsybl-notebooks/main?labpath=cgmes.ipynb)
 - Network area diagram notebook: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/powsybl/pypowsybl-notebooks/main?labpath=network_area_diagram.ipynb)
+- Flow decomposition notebook: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/powsybl/pypowsybl-notebooks/main?labpath=flow_decomposition_visualization_demo.ipynb)