Add internal timeout method

This method will be used in the mapping layer to instantiate a
FrameFillOptions.

common/locator.go

@@ -3,6 +3,7 @@ package common
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/grafana/xk6-browser/k6ext"
 	"github.com/grafana/xk6-browser/log"
@@ -51,6 +52,11 @@ func (l *Locator) Clear(opts *FrameFillOptions) error {
 	return nil
 }
 
+// Timeout will return the default timeout or the one set by the user.
+func (l *Locator) Timeout() time.Duration {
+	return l.frame.defaultTimeout()
+}
+
 // Click on an element using locator's selector with strict mode on.
 func (l *Locator) Click(opts goja.Value) error {
 	l.log.Debugf("Locator:Click", "fid:%s furl:%q sel:%q opts:%+v", l.frame.ID(), l.frame.URL(), l.selector, opts)