PR Summary

Whether good practice or not, a parameter defined withValueFromPipeline is flagged as unused when referred to by$_ or$PSItem within the process block of a function.

This PR checks forValueFromPipeline when the parameter's usage is inspected. If set,$_ and$PSItem count towards it's usage when seen in a process block.

Fixes#1840

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all.cs,.ps1 and.psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• This PR is ready to merge and is notWork in Progress.
  • If the PR is work in progress, please add the prefixWIP: to the beginning of the title and remove the prefix when the PR is ready.