Added Pycobra: A library for ensemble learning and visualization

[rfeverts]

This pull request adds Pycobra, a Python toolbox for ensemble learning and visualization, to the Machine Learning section of the Awesome Python list.

Why Pycobra?

• Pycobra simplifies the process of combining multiple models to improve prediction performance.
• It includes unique visualization tools, such as Voronoi tessellations, to make ensemble learning interpretable.
• Fully compatible with scikit-learn, making it easy to integrate with existing machine learning pipelines.

Key Features

• Combines multiple models using various ensemble learning algorithms.
• Provides advanced visualizations to interpret results effectively.
• Easy-to-use interface, ideal for both beginners and advanced users in machine learning.
• Pycobra is a valuable addition to the Machine Learning section as it addresses a specific need for ensemble learning with a focus on interpretability and usability.

Anyone who agrees with this pull request could submit an Approve review to it.

Example usage:
Example importing and Fitting models.txt
Example making predictions and visualizing results.txt

References
Pycobra GitHub Repository
Scikit-learn Documentation