add figs

Signed-off-by: young <1593815610@qq.com>
4 years ago · 9835d69da0
--- a/docs/figs/PR.png
+++ b/docs/figs/PR.png
--- a/docs/figs/engine.png
+++ b/docs/figs/engine.png
--- a/docs/figs/gitlink.png
+++ b/docs/figs/gitlink.png
--- a/docs/figs/issues.png
+++ b/docs/figs/issues.png
--- a/docs/figs/project_list.png
+++ b/docs/figs/project_list.png
--- a/docs/figs/repo.png
+++ b/docs/figs/repo.png