Replace javascript module otto with goja (#4631)

* Move plugin javascript to own package with goja
* Use javascript package in scraper

Remove otto

pkg/javascript/util.go

@@ -0,0 +1,25 @@
+package javascript
+
+import (
+	"fmt"
+	"time"
+)
+
+type Util struct{}
+
+func (u *Util) sleepFunc(ms int64) {
+	time.Sleep(time.Millisecond * time.Duration(ms))
+}
+
+func (u *Util) AddToVM(globalName string, vm *VM) error {
+	util := vm.NewObject()
+	if err := util.Set("Sleep", u.sleepFunc); err != nil {
+		return fmt.Errorf("unable to set sleep func: %w", err)
+	}
+
+	if err := vm.Set(globalName, util); err != nil {
+		return fmt.Errorf("unable to set util: %w", err)
+	}
+
+	return nil
+}