Blacklist

[TatevikGr]

Summary

• add blacklist controller

Unit test

Are your changes covered with unit tests, and do they not break anything?

You can run the existing unit tests using this command:

vendor/bin/phpunit tests/

Code style

Have you checked that you code is well-documented and follows the PSR-2 coding
style?

You can check for this using this command:

vendor/bin/phpcs --standard=PSR2 src/ tests/

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