* keypoint petr (#7774)

* petr train ok

train ok

refix augsize

affine size fix

update msdeformable

fix flip/affine

fix clip

add resize area

add distortion

debug mode

fix pos_inds

update edge joints

update word mistake

* delete extra codes;adapt transformer modify;update code format

* reverse old transformer modify

* integrate datasets

* add config and architecture for human36m (#7802)

* add config and architecture for human36m

* modify TinyPose3DHRNet to support human3.6M dataset

* delete useless class

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Co-authored-by: XYZ <1290573099@qq.com>

add dark deploy supported, mpii deploy supported;

* Add BottomUp HigherHRNet for pose.
* reverse xtcocotools to pycocotools

* pose bottomup higherhrnet: data
* mv common function to ppdet modeling;
* fix code style