Missing usage documentation

### Summary of the new feature / enhancement

I had trouble finding documentation for how to use the module

Eventually, found the [official MS docs](https://learn.microsoft.com/en-us/powershell/utility-modules/platyps/overview?view=ps-modules#get-started-with-platyps)

Recommend: linking from the main `README.md`

### Proposed technical implementation details (optional)

_No response_