Move Spectre.Console.Cli to it's own package

test/Spectre.Console.Cli.Tests/Unit/CommandAppTests.Version.cs

@@ -0,0 +1,31 @@
+namespace Spectre.Console.Tests.Unit.Cli;
+
+public sealed partial class CommandAppTests
+{
+    public sealed class Version
+    {
+        [Fact]
+        public void Should_Output_The_Version_To_The_Console()
+        {
+            // Given
+            var fixture = new CommandAppTester();
+            fixture.Configure(config =>
+            {
+                config.AddBranch<AnimalSettings>("animal", animal =>
+                {
+                    animal.AddBranch<MammalSettings>("mammal", mammal =>
+                    {
+                        mammal.AddCommand<DogCommand>("dog");
+                        mammal.AddCommand<HorseCommand>("horse");
+                    });
+                });
+            });
+
+            // When
+            var result = fixture.Run(Constants.VersionCommand);
+
+            // Then
+            result.Output.ShouldStartWith("Spectre.Cli version ");
+        }
+    }
+}