Add option not to throw exception on `tecHOOK_REJECTED`.

If you add an option to Xrpld.submit not to throw an exception even if the result code is `tecHOOK_REJECTED`, you can add `tecHOOK_REJECTED` to test cases and write safer Hook code when you use jest. 

like
```ts
Xrpld.submit(testContext.client, {
      tx: {...},
      wallet: testContext.alice,
},
{
    allowHookRejected: true
}
)
```