[Emacs] Add windows toast support to alert.el

dotfiles/lib/bin/windows-toast.ps1

@@ -0,0 +1,17 @@
+param($Title)
+$ErrorActionPreference = "Stop"
+[Windows.UI.Notifications.ToastNotificationManager, Windows.UI.Notifications, ContentType = WindowsRuntime] > $null
+$Template = [Windows.UI.Notifications.ToastNotificationManager]::GetTemplateContent([Windows.UI.Notifications.ToastTemplateType]::ToastText02)
+
+$RawXml = [xml] $Template.GetXml()
+($RawXml.toast.visual.binding.text | Where-Object { $_.id -eq "1" }).AppendChild($RawXml.CreateTextNode($Title)) > $null
+($RawXml.toast.visual.binding.text | Where-Object { $_.id -eq "2" }).AppendChild($RawXml.CreateTextNode($args[0])) > $null
+
+$SerializedXml = New-Object Windows.Data.Xml.Dom.XmlDocument
+$SerializedXml.LoadXml($RawXml.OuterXml)
+
+$Toast = [Windows.UI.Notifications.ToastNotification]::new($SerializedXml)
+$Toast.ExpirationTime = [DateTimeOffset]::Now.AddMinutes(30)
+
+$Notifier = [Windows.UI.Notifications.ToastNotificationManager]::CreateToastNotifier("Emacs")
+$Notifier.Show($Toast);

dotfiles/lib/functions/windows_toast

@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+function windows_toast {
+	powershell.exe -File ~/dotfiles/dotfiles/lib/bin/windows-toast.ps1 -Title "$@" 2>/dev/null
+}
+
+windows_toast "$@"