chore: import upstream snapshot with attribution

runtime/python/grpc/proto/Readme.md

@@ -0,0 +1,25 @@
+```	
+service ASR { //grpc service
+  rpc Recognize (stream Request) returns (stream Response) {} //Stub
+}
+
+message Request { //request data
+  bytes audio_data = 1; //audio data in bytes.
+  string user = 2; //user allowed.
+  string language = 3; //language, zh-CN for now.
+  bool speaking = 4; //flag for speaking. 
+  bool isEnd = 5; //flag for end. set isEnd to true when you stop asr:
+  //vad:is_speech then speaking=True & isEnd = False, audio data will be appended for the specfied user.
+  //vad:silence then speaking=False & isEnd = False, clear audio buffer and do asr inference.
+}
+
+message Response { //response data.
+  string sentence = 1; //json, includes flag for success and asr text .
+  string user = 2; //same to request user.
+  string language = 3; //same to request language.
+  string action = 4; //server status:
+  //terminate：asr stopped; 
+  //speaking：user is speaking, audio data is appended; 
+  //decoding: server is decoding; 
+  //finish: get asr text, most used.
+}

runtime/python/grpc/proto/paraformer.proto

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+// Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights
+// Reserved. MIT License  (https://opensource.org/licenses/MIT)
+//
+// 2023 by burkliu(刘柏基) liubaiji@xverse.cn
+
+syntax = "proto3";
+
+option objc_class_prefix = "paraformer";
+
+package paraformer;
+
+service ASR {
+  rpc Recognize (stream Request) returns (stream Response) {}
+}
+
+enum WavFormat {
+  pcm = 0;
+}
+
+enum DecodeMode {
+  offline = 0;
+  online = 1;
+  two_pass = 2;
+}
+
+message Request {
+  DecodeMode mode = 1;
+  WavFormat wav_format = 2;
+  int32 sampling_rate = 3;
+  repeated int32 chunk_size = 4;
+  bool is_final = 5;
+  bytes audio_data = 6;
+}
+
+message Response {
+  DecodeMode mode = 1;
+  string text = 2;
+  bool is_final = 3;
+}