* add mcfairmot 4 class vehicle with bytetracker

* update modelzoo, test=document_fix

* add multi-scale test

* add resnet34-fpn-mstest item in model zoo

* fix label_list for mot, add warnings

* add result txt format, test=document_fix

* fix readme of mtmct, fix paddle.disable_static, test=document_fix

* remove paddle api

* fix problem of s2anet while deploying

* correct problem of s2anet TestReader

* add dota default category

* fix Momentum and label list

* fix export of mcfairmot

* update citation

* update citation

* add mcfairmot train eval export code

* fix eval and export

* update modelzoo

* add hrnet18_dlafpn

* unify jdetracker

* fix deploy infer for single class

* fix multi class fairmot deploy

* fix mcmot data source and deploy

* fix num_identities

* fix num_identities_dict

* add centernet

* add centernet

* add r50 for centernet

* support deploy for centernet

* add doc

* update pretrain

* clean code

* update r50 doc

* unify for_mot

* update code according to review

* update doc

* refine preprocess

* update doc

* a version of ppyolo for EdgeBoard

* a version of ppyolo for EdgeBoard

* decode with cache

* update

* update

* add frame_rate for mot infer video

* add doc of frame_rate for mot video infer, test=document_fix

* add gfl model and PicoDet

* add python train time eval

* add mpii infer support

* mot video decode to images

* add infer_dir for mot

* fix export and unite pose infer

* remove task in mot source

* set image_dir

* update doc

Besides removing unnecessary imports, this also fixes the missing logger module in test_architectures.py within the static directory.

* add sparsercnn

* update sparsercnn