Adding LINQPad6 as its own app (#4886)

* Adding LINQPad6 as its own app

* oops

Co-authored-by: Union Palenshus <unionp@microsoft.com>

manifests/LINQPad/LINQPad6/6.11.11.yaml

@@ -0,0 +1,17 @@
+Id: LINQPad.LINQPad6
+Version: 6.11.11
+Name: LINQPad
+Publisher: LINQPad
+License: Copyright (c) LINQPad Pty Ltd
+AppMoniker: linqpad
+Tags: .net, sql
+Description: The .NET Programmer’s Playground
+Homepage: https://www.linqpad.net/
+Installers:
+  - Arch: Neutral
+    Url: https://www.linqpad.net/GetFile.aspx?LINQPad6Setup.exe
+    Sha256: 41170259f5b710260ffc462373d21d0dd1e86f5761eb87f2e21557ba2f4afa19
+    InstallerType: inno
+    Switches:
+      Silent: "/verysilent"
+      SilentWithProgress: "/silent"