TYPO3: generate fluid XSD schema files

$ ./typo3/cli_dispatch.phpsh extbase schema:generate --extension-key FluidTYPO3.flux --enable-documentation FALSE > flux.xsd
$ ./typo3/cli_dispatch.phpsh extbase schema:generate --extension-key FluidTYPO3.vhs --enable-documentation FALSE > vhs.xsd
$ ./typo3/cli_dispatch.phpsh extbase schema:generate --extension-key 'TYPO3.Fluid' --enable-documentation FALSE > fluid.xsd