[audio]refactor audio arch

[audio] dtw metric

[audio] tests and metric dir, format code

[doc] update ctc loss compare

 [server] added engine type and asr inference 

[server] add server demo

[CLI][Logger]Add cli logger control.

[server] speech server init version

[server]add readme

[server] improve cli code

[CLI][Batch]Support batch input in cli.

[server] add cli