[Documentation] Add Usage examples to online github docs

### Motivation

I was trying to understand how to use the DataPortInterface class using https://intel.github.io/rohd-hcl/rohd_hcl/DataPortInterface-class.html and could not figure out how I was supposed to use it.. A simple usage example of the class would go a long way for each of the classes.

### Desired solution

Class documentation includes a simple usage example the user get started using the class.

### Alternatives considered

Searching the repo for the class and figure out the usage that way.

### Additional details

_No response_