Add speak-countdown.ps1

Scripts/speak-countdown.ps1

@@ -0,0 +1,20 @@
+#!/usr/bin/pwsh
+<#
+.SYNTAX       speak-countdown.ps1 [start-number]
+.DESCRIPTION  speaks a countdown by text-to-speech (TTS)
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+param([int]$StartNumber = 10)
+
+try {
+	for ([int]$i = $StartNumber; $i -gt 0; $i--) {
+		& "$PSScriptRoot/speak-english.ps1" $i
+		start-sleep -milliseconds 1000
+	}
+	exit 0
+} catch {
+	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}