Add syntax highlighting for DTC in Jupyter notebooks

[mserranom]

Issue Checklist:

• Descriptive title
• Completed sections below

Problem Description

Right now we're using cat to print DTCs in a Jupyter notebook. In order to increase readability we'd need to add syntax highlight for the YAML, and ideally for the python code in expression blocks.

Solution Proposal

It is possible to print HTML using the display() function. It's also possible to execute Javascript code. We can create a print_dtc() function that loads a syntax highlighter, and then add markup to the parts of the DTC prior to calling display.

Impact on current behavior

None