Split into service and main, refactor some code and add better tests

service/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"net/http"
+)
+
+func main() {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/info", handleInfoRequest)
+	http.ListenAndServe(":8080", mux)
+}
+
+func handleInfoRequest(w http.ResponseWriter, r *http.Request) {
+
+}