developer/api/v1/apps/New-Application.ps1

function New-Application
{
    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory)]
        [string] $AppName,
        [Parameter(Mandatory)]
        [string] $AppAlias,
        [string] $AppDescription
    )

    if ($PSCmdlet.ShouldProcess($AppAlias))
    {
        return Invoke-Api Post "/developer/api/v1/apps/$AppAlias" -JsonBody @{
            "name" = $AppName
            "alias" = $AppAlias
            "description" = $AppDescription
        }
    }
}