[test][cli] update cli test case

[server] add server cls

[tests] fix benchmark

[TTS]format synthesize

[DOC]update readme, test=doc

[TTS]fix synthesize bug for speedyspeech

[TTS]add ljspeech hifigan egs.

[tts]add aishell3 hifigan egs

[tts]add vctk hifigan egs

[server] modify yaml

[audio] refactor audio arch

[audio]Add reference and doc string.

[audio][feature]Refactor and add doc string.

[server] add server test