Alpha test before public (openxrlab#3)

* Revise getting_started

* add README files

* add mvpose doc

* [Fix] Fix doc, dockerfile, scripts and github action (openxrlab#1)

* Test codecov

* [Fix] Fix outdata URL, and advices for docs (openxrlab#5)

* Add docs and benchmark for MvP (openxrlab#2)

* [Add] Add download links for checkpoints

* [Fix] Fix hyperlinks, fix default dirs and filenames in configs and scripts

* [Add] Add a small test set for inference/demo

* Add docs and benchmark for MVPose and MVPose tracking (openxrlab#6)

* [Fix] Update docs for sperson in getting started (openxrlab#7)

* Revise mvp inference

* Bump version to v0.5.0

Co-authored-by: lijiaqi2 <[email protected]>
Co-authored-by: gaoyang3 <[email protected]>
Co-authored-by: LazyBusyYang <[email protected]>
Co-authored-by: wqyin <[email protected]>
Co-authored-by: yinwanqi <[email protected]>
Co-authored-by: jiaqiAA <[email protected]>