feat: mail tool to handle bounces

composer.json

composer.lock

...ges/docs/getting-started/installation-and-requirements.md

psalm.xml

src/Command/MailBounce.php

src/Command/MailSend.php

src/CommonMarkTableOfContentsLink.php

src/DatabaseConnection.php

src/Event/HttpServerStarted.php

src/Event/MailBounced.php

src/InputValidatedData/FrontMatter.php

src/LlamaCppInfill.php

src/MailerTransportConfiguration.php

src/OAuth2Claim.php

src/OAuth2Configuration.php

src/RPCRequest.php

src/ServerPipeMessageDispatcher.php

src/ServerPipeMessageHandlerInterface.php

src/ServerTaskHandlerDispatcher.php

src/SingletonProvider/MailerRepositoryProvider.php