Detect using ruby_block to run powershell_out

What category of cop is this?:

Please try to select as few as possible.

• ChefDeprecations - A cop that alerts on a deprecation in the Chef Infra Client
• ChefCorrectness - A cop that alerts when incorrect coding behavior is being used
• ChefSharing - A cop that alerts to missing functionality necessary for sharing cookbooks with others
• ChefStyle - A cop that alerts to a style best practice
• ChefModernize - A cop that alerts when a cookbook can be simplified or modernized with new functionality
• ChefEffortless - A cop that alerts on code that must be resolved to move to the Effortless pattern

Describe the new cop:

If there's a powershell command you want to run you should use powershell_script to do it natively instead of wrapping it all in ruby.

What it would trigger on:

    ruby_block "foo" do
      block do
        powershell_out("SomeCmdLet")
      end
    end

Start by locating the existing ChefCorrectness cops and their tests in Cookstyle, then compare how they detect cookbook patterns. Use the shown ruby_block and powershell_out example as the initial case; done means the new cop identifies this pattern and recommends using powershell_script instead.