* add caption model ETS for PaddleVideo

* modify dynamic rnn to static rnn, and add infer past

* modify reader and configs for evaluation and validation

* modify details of the ets net code

* modify API of data and dataloader for ets net

* fix fluid.data and fluid.io.DataLoader

* add logger in utils/utility.py

* fix reader, metrics, frameworks to increase universality of PaddleVideo

* change config files from .txt to .yaml

* fix input to use PyReader and modify on readme to fit new codes

* adjust code structure and modify configs and readme to fit standard

* modify links of pdparams in readme and scripts

* fix pickle.dump in python3 and modify on readme of attention_lstm

* add description of weights argument in eval/predict/inference_model.py

* add cuda check to show errors when run on paddle compiled with cpu only

* change use_cuda to use_gpu in the error infomation to be consistent with code

* fix test and infer for ctcn

* add instruction to dataset/ctcn/readme

* Shift up fluid models

* Update nlp submodules

* Add redirect guide in org readme

* Move HiNAS_models to AutoDL

* Delete file
* Rever the raw file

* Adjust the structure of whole repo

* Correct the readme for speec

* Update submodules LAC, Senta and SimNet