core: add contest/list hook

packages/hydrooj/src/handler/contest.ts

@@ -81,6 +81,7 @@ export class ContestListHandler extends Handler {
             ...rule ? { rule } : { rule: { $in: rules } },
             ...group ? { assign: { $in: [group] } } : {},
         };
+        await this.ctx.parallel('contest/list', q, this);
         const cursor = contest.getMulti(domainId, q).sort({ endAt: -1, beginAt: -1, _id: -1 });
         let qs = rule ? `rule=${rule}` : '';
         if (group) qs += qs ? `&group=${group}` : `group=${group}`;