[5.x] Added 2 types search for entries

[merkulovka]

This PR adds two new entries searches:

1. By email;
2. By response status.

While testing our products, we were faced with the fact that records are added too quickly and it becomes very difficult to catch the desired record, the solution was to add an email search

[taylorotwell]

Thanks for your pull request to Laravel!

Unfortunately, I'm going to delay merging this code for now. To preserve our ability to adequately maintain the framework, we need to be very careful regarding the amount of code we include.

If applicable, please consider releasing your code as a package so that the community can still take advantage of your contributions!