Change Log for PSScriptTools

v2.19.0

Modified Get-FolderSizeInfo to use [system.collections.arraylist]` to improve performance. (Issue #68)
Fixed bug in Get-FolderSizeInfo running in PowerShell 7 that wasn't including System files.
Updated help for Get-FolderSizeInfo
Added online help link for Get-PSScriptTools.
Added better error handling to Test-EmptyFolder
Added Computername property to passthru output from Test-EmptyFolder
Added alias fcc for Find-CimClass
Added alias pstree for Show-Tree
Revised Show-Tree to use splatting for internal commands
Added a dynamic parameter InColor for Show-Tree to display results in ANSI color if running PowerShell 7.
Added format file serviceansi.format.ps1xml to display service status colored when using PowerShell 7
Updated README.md