Add launchSettings.json for better out of box experience when using Visual Studio (#9818)

PowerShell.sln

@@ -1,6 +1,5 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
+# Visual Studio Version 16
 # https://github.com/dotnet/project-system/blob/master/docs/opening-with-new-project-system.md#project-type-guids
 VisualStudioVersion = 15.0.26730.12
 MinimumVisualStudioVersion = 10.0.40219.1

src/powershell-win-core/Properties/launchSettings.json

@@ -0,0 +1,8 @@
+{ 
+  "profiles": {
+    "powershell-win-core": {
+      "commandName": "Executable",
+      "executablePath": ".\\win7-x64\\publish\\pwsh.exe"
+    }
+  }
+}