* add ppyoloe distill with soft loss and feature loss

* refine distill codes

* fix configs and docs

* clean codes

* merge cam, fix export

* add ppyoloe plus tiny with aux_head

* fix ppyoloe tiny training

* fix ppyoloe+ tiny p2 model

* add ppyoloe t p2 model

* add sku110k models

* add link in ppyoloe doc

* modify directory of sku110k

* fix data config problem

* remove duplicate backbone variant, test=document_fix

* add ppyoloe+ voc

* fix doc

* [ppyoloe-plus] add downstream tasks

* [ppyoloe-plus] add task reademe and base config, test=document_fix

* [ppyoloe-plus] fix config

* Update README.md

* [ppyoloe+] fix readne and name, test=document_fix

* [ppyoloe+] fix base cofig

* [dev] add ppyoloe_plus configs and alter NormalizeImage

* alter other NormalizeImage

* alter cpp NormalizeImage

* add ppyoloe-s 400epoch, test=document_fix

* fix doc typo, test=document_fix

* fix doc typo, test=document_fix

* add Comprehensive Metrics of PPYOLOE, test=document_fix

* add val2017 description of Comprehensive Metrics, test=document_fix

* update readme doc, test=document_fix

* update test mAP, test=document_fix

* add speed testing, model -> onnx -> tensorrt, test=document_fix

* add speed testing, model -> onnx -> tensorrt, test=document_fix

* dist training doc

* add multi-machine distribued training link

* add pphuman ppvehicle configs and doc

* update doc and configs ,test=document_fix

* fix doc, test=document_fix

* update doc, test=document_fix

* update doc, test=document_fix

* update changelog, test=document_fix

* update readme model, test=document_fix

* add ppyoloe 36 epoch yaml for xpu.

* update device and lr.

* fix device.

* fix eval_input_size

* refine ppyoloe docs, test=document_fix

* fix some problem of docs, test=document_fix

* add ppyoloe docs, test=document_fix

* modify docs according to review and add map-fps png

* fix links

* modify ppyoloe docs, test=document_fix

* modify ppyoloe_map_fps png, test=document_fix