添加submission_list 和 submission details API

submission/urls/oj.py

@@ -1,7 +1,8 @@
 from django.conf.urls import url
 
-from ..views.oj import SubmissionAPI
+from ..views.oj import SubmissionAPI, SubmissionListAPI
 
 urlpatterns = [
-    url(r"^submissions/?$", SubmissionAPI.as_view(), name="submission_api"),
+    url(r"^submission/?$", SubmissionAPI.as_view(), name="submission_api"),
+    url(r"^submissions/?$", SubmissionListAPI.as_view(), name="submission_list_api"),
 ]