[speechx] fix cmvn_2_kalditype compile error

[doc]add pptts readme

[Server] fix server doc and decode_method

[tts] normalize wav max value to 1 in preprocess, test=tts

[doc]add streaming tts demo, test=doc

[server] improve code

[server]change vector train.py local_rank to rank

[CLI] Add cacu rtf scripts

speedyspeech support kunlun

[server]streaming asr server using paddlespeech_server/client

[ASR] Replace dist.spawn with dist.launch

[server]update the vector and text readme

[CLI]Add RTF wrapper for asr.

[Doc] Updata released model info (Wenetspeech ds2 and conformer online)

[server] unify name style & frame with abs timestamp

[doc] update readme with new feature