TYPO3 Core

When having a local storage with a path outside the site path, the URL cannot be generated currently, as it has to be absolute and there is neither a configuration field for the base URL nor code inside the local driver to generate a URL with this base URL.

The field should be added to the flexform of the local driver, as we cannot ship database updates in minor versions (like 6.0.3). Additionally, this field might not be required for all drivers, so it's not absolutely necessary to have it in the storages table directly.