1.1.6: Driver abilities + informative commands + NelexaZip driver

BC-breaking changes:

• Changed signature: UnifiedArchive::open($filename, string|null $password = null) => UnifiedArchive::open($filename, array $abilities = [], string|null $password = null). Right now if second argument is string, it will be treated as password (for BC-compatability).

• open throws an Exception when format is not recognized or there's no driver that support requested abilities.

• addFiles/deleteFiles/getComment/setComment throws an Exception when driver does not support this ability.

• Deleted methods in UnifiedArchive: canOpenArchive, canOpenType, canCreateType, getArchiveType, detectArchiveType, getFileResource, getArchiveFormat, isFileExists, getArchiveSize, countCompressedFilesSize, countUncompressedFilesSize.

New features:

• Added passing needed abilities to UnifiedArchive::open() to select a better driver:

  use \wapmorgan\UnifiedArchive\Drivers\BasicDriver;
  
  # opens an array with driver, that supports content streaming and appending
  $archive = \wapmorgan\UnifiedArchive\UnifiedArchive::open('archive.7z', [BasicDriver::STREAM_CONTENT, BasicDriver::APPEND]);
  # if not specified, uses OPEN or OPEN_ENCRYPTED check, if password passed

• Added UnifiedArchive::test($files = []) (and cam files:test command) to test archive contents (compare actual control sum with stored crc32).
• More informative output in commands: system:drivers, system:formats, system:format, added command files:test.
• Added driver abilities to select better driver.

Driver changes:

• Added NelexaZip pure-PHP driver.
• Added Iso driver extraction ability.
• Added commenting-ability for SevenZip driver (via descript.ion file in archive).