Add launchsettings file for easy debugging (Azure#47771)

* Add launchsettings file for easy debugging

* Fix name

Author: JoshLove-msft

eng/packages/http-client-csharp/generator/Azure.Generator/src/Properties/launchSettings.json

@@ -0,0 +1,9 @@
+{
+  "profiles": {
+    "Basic-TypeSpec": {
+      "commandLineArgs": "$(SolutionDir)/../dist/generator/Microsoft.Generator.CSharp.dll $(SolutionDir)/TestProjects/Local/Basic-TypeSpec -p AzureClientPlugin",
+      "commandName": "Executable",
+      "executablePath": "dotnet"
+    }
+  }
+}