Annuus

Add config to switch compress mode, the config 'chunk_compression' allows: ['no_compress', 'best_compress', 'best_speed'], also can configration by command like: /annuus chunk_compression best_compress.

Add debug command: 'annuusug', use to toggle debug flag, and use /annuusug show and /annuusug resetCounters to show and reset traffic counter and time counter.