* add iou-fcos and ssod baseline

* add gen_semi_coco, fix doc

* fix doc links

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

* add fcos ttfnet coment, update modelzoo

* fix ttfnet coment

* fcos infer

* fcos training

* fix stgraph fcosloss

* fcos doc

* fix dy_fcos

* add comment

* train eval deploy fcos

* remove fcos config, add comment

* fix iter_tic
Co-authored-by: Nnemonameless <nemonameless@qq.com>
Co-authored-by: Ngeorgenemo <nifeng@pku.edu.cn>