Add Telegram Desktop 2.4.3 (#4352)

* Add Telegram Desktop 2.4.3

* Homepage URL updated

* Install URL updated

manifests/Telegram/TelegramDesktop/2.4.3.yaml

@@ -0,0 +1,18 @@
+Id: Telegram.TelegramDesktop
+Version: 2.4.3
+Name: Telegram Desktop
+Publisher: Telegram Messenger Inc.
+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://github.com/telegramdesktop/tdesktop
+Installers:
+  - Arch: x86
+    Url: https://github.com/telegramdesktop/tdesktop/releases/download/v2.4.3/tsetup.2.4.3.exe
+    Sha256: B04FCFDB564E25C91A6802D4BA8740747AF5DD5D043D841B7F69BB13E664B4DB
+    InstallerType: exe
+    Switches:
+      Silent: /VERYSILENT /NORESTART
+      SilentWithProgress: /SILENT /NORESTART