Stop passing the WebEvent parameter, so it can be used generally

[Badgerati]

Description of the Change

The Web Event object is the first parameter supplied to the ScriptBlocks of Routes, Middleware, and Endware. These already all have access to the main $WebEvent object, including Authentication, without the need to supply it as a parameter.

Therefore, to help keep code shorter/cleaner, the event should stop being supplied as the first parameter, and instead documented to just be accessed via $WebEvent.

This change applies to Routes, Middleware, Endware, and Authentication. (Also the the $SmtpEvent when using the SMTP Server)

Related Issue

Resolves #618

Examples

So from the following:

Add-PodeRoute -Method Get -Path '/' -ScriptBlock {
    param($e)
    Write-PodeJsonResponse -Value @{ Result = $e.Data['value']}
}

To this:

Add-PodeRoute -Method Get -Path '/' -ScriptBlock {
    Write-PodeJsonResponse -Value @{ Result = $WebEvent.Data['value']}
}