[CLI]add onnxruntime infer for cli

[yt605155624]

1. add run_frontend function

2. update parameters of get_sess function

3. use use_onnx to control whether to use onnxruntime inference, use cpu by default cause we install cpu version of onnxruntime in setup.py (Mac cannot install gpu version), cpu_threads is 2 by default

   CLI:

   paddlespeech tts --input "你好，欢迎使用百度飞桨深度学习框架！" --output default.wav --use_onnx True
   paddlespeech tts --am speedyspeech_csmsc --input "你好，欢迎使用百度飞桨深度学习框架！" --output ss.wav --use_onnx True
   paddlespeech tts --voc mb_melgan_csmsc --input "你好，欢迎使用百度飞桨深度学习框架！" --output mb.wav --use_onnx True
   paddlespeech tts --voc pwgan_csmsc --input "你好，欢迎使用百度飞桨深度学习框架！" --output pwgan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_aishell3 --voc pwgan_aishell3 --input "你好，欢迎使用百度飞桨深度学习框架！" --spk_id 0 --output aishell3_fs2_pwgan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_aishell3 --voc hifigan_aishell3 --input "你好，欢迎使用百度飞桨深度学习框架！" --spk_id 0 --output aishell3_fs2_hifigan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_ljspeech --voc pwgan_ljspeech --lang en --input "Life was like a box of chocolates, you never know what you're gonna get." --output lj_fs2_pwgan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_ljspeech --voc hifigan_ljspeech --lang en --input "Life was like a box of chocolates, you never know what you're gonna get." --output lj_fs2_hifigan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_vctk --voc pwgan_vctk --input "Life was like a box of chocolates, you never know what you're gonna get." --lang en --spk_id 0 --output vctk_fs2_pwgan.wav --use_onnx True
   paddlespeech tts --am fastspeech2_vctk --voc hifigan_vctk --input "Life was like a box of chocolates, you never know what you're gonna get." --lang en --spk_id 0 --output vctk_fs2_hifigan.wav --use_onnx True

   Python API:

   from paddlespeech.cli.tts import TTSExecutor
   import time
   tts_executor = TTSExecutor()
   time_1 = time.time()
   wav_file = tts_executor(
       text='对数据集进行预处理',
       output='1.wav',
       am='fastspeech2_csmsc',
       voc='hifigan_csmsc',
       lang='zh',
       use_onnx=True,
       cpu_threads=2)
   time_2 = time.time()
   print("time of first time:", time_2-time_1)
   wav_file = tts_executor(
       text='对数据集进行预处理',
       output='2.wav',
       am='fastspeech2_csmsc',
       voc='hifigan_csmsc',
       lang='zh',
       use_onnx=True,
       cpu_threads=2)
   print("time of second time:", time.time()-time_2)

   time of first time: 14.543321371078491 (needs to download models for the first time)
   time of second time: 0.5376265048980713
   

   use specified model files:

   # use specified model files
   from paddlespeech.cli.tts import TTSExecutor
   import time
   tts_executor = TTSExecutor()
   time_3 = time.time()
   wav_file = tts_executor(
       text='对数据集进行预处理',
       output='3.wav',
       am='fastspeech2_csmsc',
       am_ckpt='./fastspeech2_csmsc_onnx_0.2.0/fastspeech2_csmsc.onnx',
       phones_dict='./fastspeech2_csmsc_onnx_0.2.0/phone_id_map.txt',
       voc='hifigan_csmsc',
       voc_ckpt='./hifigan_csmsc_onnx_0.2.0/hifigan_csmsc.onnx',
       lang='zh',
       use_onnx=True,
       cpu_threads=2)
   print("time of third time:", time.time()-time_3)
   time_4 = time.time()
   wav_file = tts_executor(
       text='对数据集进行预处理',
       output='4.wav',
       am='fastspeech2_csmsc',
       voc='hifigan_csmsc',
       lang='zh',
       use_onnx=True,
       cpu_threads=2)
   print("time of forth time:", time.time()-time_4)

   time of third time: 8.955731391906738
   time of forth time: 0.565178394317627
   

   use specified model files for ljspeech:

   # NOTE: You must set `fs` to `22050` for ljspeech when using specified model files for the first time,
   #       cause the defualt value of fs  in cli is 24000 but ljspeech's fs is 22050
   from paddlespeech.cli.tts import TTSExecutor
   import time
   tts_executor = TTSExecutor()
   time_3 = time.time()
   wav_file = tts_executor(
       text="Life was like a box of chocolates, you never know what you're gonna get.",
       output='lj_test1.wav',
       am='fastspeech2_ljspeech',
       am_ckpt='./fastspeech2_ljspeech_onnx_1.1.0/fastspeech2_ljspeech.onnx',
       phones_dict='./fastspeech2_ljspeech_onnx_1.1.0/phone_id_map.txt',
       voc='hifigan_ljspeech',
       voc_ckpt='./hifigan_ljspeech_onnx_1.1.0/hifigan_ljspeech.onnx',
       lang='en',
       use_onnx=True,
       cpu_threads=2,
       fs=22050)
   print("time of third time:", time.time()-time_3)
   time_4 = time.time()
   wav_file = tts_executor(
       text="Life was like a box of chocolates, you never know what you're gonna get.",
       output='lj_test2.wav',
       am='fastspeech2_ljspeech',
       voc='hifigan_ljspeech',
       lang='en',
       use_onnx=True,
       cpu_threads=2)
   print("time of forth time:", time.time()-time_4)

   time of third time: 3.591158390045166
   time of forth time: 1.7778213024139404