Add integration with Selenium

#### Motivation
Selenium is a commonly used browser automation tool. Based on download counts, its popularity is comparable with that of SpecFlow. A native support by Allure will help QA teams to create convenient reports from Selenium-based tests.

#### Tasks

- [ ] Explore extensibility mechanisms of Selenium
- [ ] Implement the extension
- [ ] Write acceptance tests

#### Links
The Selenium.WebDriver package: https://www.nuget.org/packages/Selenium.WebDriver/
The documentation: https://www.selenium.dev/documentation/overview/

An example of a similar integration: https://github.com/allure-framework/allure-java/tree/master/allure-selenide

Start with the Selenium.WebDriver package and Selenium documentation, then compare the linked allure-selenide integration. Explore Selenium's extensibility mechanisms, implement native Allure support, and add acceptance tests; the work is done when Selenium-based tests produce convenient Allure reports.

Written by the indexing model from the issue text.