Refactor the code (#15)

* code refactoring

* Remove reference files

* Update README and CI

* small fixes

* fix style issues

* add style check for CI

* fix style issues

* remove kaldi-native-io

sherpa-onnx/csrc/utils.h

@@ -1,39 +0,0 @@
-#include <iostream>
-#include <fstream>
-
-
-void vector2file(std::vector<float> vector, std::string saveFileName){
-    std::ofstream f(saveFileName);
-    for(std::vector<float>::const_iterator i = vector.begin(); i != vector.end(); ++i) {
-        f << *i << '\n';
-    }
-}
-
-
-std::vector<std::string> hyps2result(std::map<int, std::string> token_map, std::vector<std::vector<int32_t>> hyps, int context_size = 2){
-    std::vector<std::string> results;
-
-    for (int k=0; k < hyps.size(); k++){
-        std::string result = token_map[hyps[k][context_size]];
-
-        for (int i=context_size+1; i < hyps[k].size(); i++){
-            std::string token = token_map[hyps[k][i]];
-
-            // TODO: recognising '_' is not working
-            if (token.at(0) == '_')
-                result += " " + token;
-            else
-                result += token;
-        }
-        results.push_back(result);
-    }
-    return results;
-}
-
-
-void print_hyps(std::vector<std::vector<int32_t>> hyps, int context_size = 2){
-    std::cout << "Hyps:" << std::endl;
-    for (int i=context_size; i<hyps[0].size(); i++)
-        std::cout << hyps[0][i] << "-";
-    std::cout << "|" << std::endl;
-}