adding apfs support to pytsk is on hold. OSS-Fuzz is finding many issues in the libtsk apfs code that need to be addressed first: * https://github.com/sleuthkit/sleuthkit/issues/2641 * https://github.com/sleuthkit/sleuthkit/issues/2625 * https://github.com/sleuthkit/sleuthkit/issues/2708 * https://github.com/sleuthkit/sleuthkit/issues/2707 * https://github.com/sleuthkit/sleuthkit/issues/2721