Exceptions in setup methods do not generate results

#### I'm submitting a ...
- [x] bug report
- [ ] feature request
- [ ] support request => Please do not submit support request here, see note at the top of this template.

#### What is the current behavior?
If something fails in a OneTimeSetup or Setup decorated method there are no results generated for the tests inside the class

#### If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem
Code Example
```
using NUnit.Allure.Core;

namespace allure;

[TestFixture]
[AllureNUnit]
public class SetupError
{
[OneTimeSetUp]
public void Setup()
{
Console.Out.WriteLine("SetupStep");
throw new Exception("Exception");
}

[Test]
public void Test1()
{
Console.Out.WriteLine("Test1");
}
}
```

#### What is the expected behavior?
Test should be logged as skipped

#### What is the motivation / use case for changing the behavior?
Tests that are failed because of failed setup steps are completely missing from the report which can cause them to be missed completely

#### Please tell us about your environment:

- Allure version: 2.1.0
- Test framework: NUnit 3.13.3, Nunit3TestAdapter 4.4.2
- Allure adaptor: Allure.NUnit 2.9.5-preview1
- Generate report using: Allure CLI

#### Other information
This happens probably because of #325

Start with the provided NUnit reproduction using a failing OneTimeSetUp method and inspect how Allure.NUnit handles setup exceptions and test result generation. Confirm the behavior with NUnit 3.13.3 and Allure.NUnit 2.9.5-preview1; done means the affected test is represented in the Allure results as skipped rather than missing.

Written by the indexing model from the issue text.