feat: begin working on console app

src/AltGen.Console/Program.cs

@@ -0,0 +1,14 @@
+// TODO: We want to be able
+// to provide a path to an image
+// read the image
+// and then post the image to our API
+// get the response and display the alt text
+
+using Microsoft.Extensions.Hosting;
+
+await Host.CreateDefaultBuilder(args)
+  .ConfigureServices(static (_, services) => { })
+  .Build() // TODO: Need special extension for integrating host with Spectre.Console
+  .RunAsync();
+
+Console.WriteLine("Hello, World!");