* cpu format shape
* convert model
* python api
* speedup dataloader
* minor
* add cpp demo
* add visualize
* fix resize param order
* export pipeline.json
* fix three crop
* read SampleFrames from model_cfg
* minor
* lint
* move to a func
* speed up format shape cpu
* use input mat device
* fix comments
* fix comments
* update docs/benchmark
* docs/supported-codebases
* update tests/data
* fix lint
* fix lint
* add unittests
* lint
* modify .gitignore, remove useless files
* remove emtpy.py and generate it when use
* Update according to comments
1. Use tempfile
2. Delete inference test (which will be tested in each codebase)
3. Refine calibration test
* update annotation
* Add export_info
* Reduce data scale, fix assert
* update json blank line
* add backend check