Add Github Action to add a commit with #run-e2e-tests (#41311)

Summary:
https://github.com/facebook/react-native/issues/41308 introduce the possibility to run e2e tests if a commit contains #run-e2e-tests in the commit message.
This PR builds on top of that, and let users to run e2e tests by adding a comment with with #run-e2e-tests

## Changelog:
[Internal] - Allow to run e2e tests from comments

Pull Request resolved: https://github.com/facebook/react-native/pull/41311

Test Plan: Not sure it can be tested until the PR is merged... ¯\_(ツ)_/¯

Reviewed By: dmytrorykun

Differential Revision: D51111543

Pulled By: cipolleschi

fbshipit-source-id: e6c55950552f03830fa35c89d385ab9b17f8facb