chore(port-forward): support multiple port forwarded

internal/portforward/service/helpers.go

@@ -0,0 +1,22 @@
+package service
+
+import (
+	"fmt"
+	"strings"
+)
+
+func portsToString(ports []uint16) (s string) {
+	switch len(ports) {
+	case 0:
+		return "no port forwarded"
+	case 1:
+		return "port forwarded is " + fmt.Sprint(int(ports[0]))
+	default:
+		portStrings := make([]string, len(ports))
+		for i, port := range ports {
+			portStrings[i] = fmt.Sprint(int(port))
+		}
+		return "ports forwarded are " + strings.Join(portStrings[:len(portStrings)-1], ", ") +
+			" and " + portStrings[len(portStrings)-1]
+	}
+}