Initial commit: Go project with greet function and CLI

pkg/greet/greet.go

@@ -0,0 +1,10 @@
+package greet
+
+// Greet returns a greeting message for the given name.
+// If name is empty, it defaults to "world".
+func Greet(name string) string {
+	if name == "" {
+		return "Hello world!"
+	}
+	return "Hello " + name + "!"
+}