Add TelegramDesktop 2.5.7 (#6725)

manifests/Telegram/TelegramDesktop/2.5.7.yaml

@@ -0,0 +1,21 @@
+---
+
+Id: Telegram.TelegramDesktop
+Version: 2.5.7
+Name: TelegramDesktop
+Publisher: Telegram
+License: GNU General Public License version 3
+LicenseUrl: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+AppMoniker: telegram
+Tags: messenger, messaging
+Description: Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.
+Homepage: https://desktop.telegram.org/
+Installers:
+  - Arch: x86
+    Url: https://github.com/telegramdesktop/tdesktop/releases/download/v2.5.7/tsetup.2.5.7.exe
+    Sha256: 55B1DFABD172B792EE5EA3AAF3F57864A3AABC1A20A20D9BA272FCD6660CDAB4
+    InstallerType: exe
+    Switches:
+      Silent: /VERYSILENT /NORESTART
+      SilentWithProgress: /SILENT /NORESTART
+