Initial: Go app with tests + CI workflow

main.go

@@ -0,0 +1,16 @@
+package main
+
+import "fmt"
+
+func Add(a, b int) int {
+    return a + b
+}
+
+func Greet(name string) string {
+    return fmt.Sprintf("Hello, %s!", name)
+}
+
+func main() {
+    fmt.Println(Greet("CI/CD"))
+    fmt.Println("2 + 3 =", Add(2, 3))
+}