enter Debug Writer
fun enterDebugWriter(directory: String, logLevel: FfiLogLevel, rotation: FfiLogRotation, maxFiles: UInt)
turns on logging to a file on-disk in the directory specified. files will be prefixed with 'libxmtp.log' and suffixed with the timestamp, i.e "libxmtp.log.2025-04-02" A maximum of 'max_files' log files are kept.