Feature: #90370 - Use EguliasEmailValidator for email validation 

See forge#90370

Description 

\TYPO3\CMS\Core\Utility\GeneralUtility::validEmail now uses the package EguliasEmailValidator and the RFCValidation for validating the provided email address.

This allows to follow the RFC more closely.

Impact 

The following email addresses are now valid:

  • foo@äöüfoo.com
  • foo@bar.123
  • test@localhost
  • äöüfoo@bar.com
  • Abc@def"@example.com