Adding Notebooks with Colab links

[LuthandoMaqondo]

Adding notebooks The purpose of all that is to make it super easy for others to quickly experiment and test out using a notebook like Google Colab.

The notebook contains the exact same code logic written in the main repo's README file.

• I have added a directory called notebooks.
• Added 2 notebooks namely: training and inference
• The notebooks have a clickable link to Google Colab.

[LuthandoMaqondo]

I've cleaned up some silly errors from the last versions and added some code separations.