Swaps one rendering for another and optionally swaps out the datasource too

Swap-Rendering-Function.ps1

function Swap-Rendering ($item, $renderingToSwapOut, $placeholder, $renderingIdToAdd, $renderingDataSourceIdToAdd, $useFinalLayout) {
    $renderingItem = Get-Item -Path $renderingToSwapOut.ItemID
    Write-Host "Swaping Rendering: $($renderingToSwapOut.UniqueID) - '$($renderingItem.Name)' in Placeholder: $($placeholder) to: $($renderingIdToAdd) - '$($renderingToAdd.Name)' for Item: $($item.Name)"
    $renderingToSwapOut.ItemID = $renderingIdToAdd
    if($renderingDataSourceToAdd){
        $renderingToSwapOut.Datasource = $renderingDataSourceToAdd
    }
    Set-Rendering -Item $item -Instance $renderingToSwapOut -FinalLayout:$useFinalLayout
}