Allow Invoke-Formatter to be pipable

Summary of the new feature

A clear and concise description of what the problem is that the new feature would solve.
Hi I have some powershell code in a variable, it would be usefull if I could run $code | Invoke-Formatter, this does not seem to work instead I have to run Invoke-Formatter $code.

What is the latest version of PSScriptAnalyzer at the point of writing
I am using 1.20.0 of PSScriptAnalyzer on Windows 10 using pwsh 7.1

首先在 PSScriptAnalyzer 中定位 Invoke-Formatter 命令，并检查它当前如何接受 code 参数。使用 PowerShell 管道输入验证所需的行为，并在 $code | Invoke-Formatter 产生与 Invoke-Formatter $code 相同的格式化输出时，视为工作完成。