Make app settings configuration file optional

Author: calebkiage

src/Program.cs

@@ -117,7 +117,7 @@ static IHostBuilder CreateHostBuilder(string[] args) =>
 
         static void ConfigureAppConfiguration(IConfigurationBuilder builder) {
             builder.Sources.Clear();
-            builder.AddJsonFile(Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location), "app-settings.json"), optional: false);
+            builder.AddJsonFile(Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location), "app-settings.json"), optional: true);
             var pathUtil = new PathUtility();
             var authCache = new AuthenticationCacheUtility(pathUtil);
             var dataDir = pathUtil.GetApplicationDataDirectory();