AWS eventBridge schedule cron expression parser

$3

``js
const { awsCronExpressionValidator } = require('aws-cron-expression-validator')
const valid = awsCronExpressionValidator('0 12 ? MON-FRI ')
/** if it's valid it will return object
*return {
* minute,
* hour,
* dayOfMonth,
* month,
* dayOfWeek,
* year,
* expression
* }
**/
// if it's invalid it will throw exception.
``