Use static syntax highlighting generators

[johnsamuelwrites]

Currently, the syntax highlighting for the code used in the slides is created manually. Any small modification requires a lot of effort for correcting or creating a new syntax highlight code.

Two tasks:

1. Identify all the available code snippets in the slides and remove existing syntax highlighting code.
2. Create a new file for each snippet of code
3. Use Python pygments for automated generation of the syntax highlighting.