* [Enchance] support infererence with padding * limite pad after flip when inference * add test code
* Add header for files * Delete header in config files
* fix tta bug * modify as suggested * fix test_tta bug
* Support resize data augmentation according to original image size (img_scale=None and retio_range is tuple) * fix docstring * fix bug * add unittest * img_scale=None in TTA * fix bug * add unittest * fix typos * fix bug