Add user follow-up section (#250)

source/plugins/base/queries/repository.graphql

@@ -33,6 +33,9 @@ query BaseRepository {
       pr_open: pullRequests(states: OPEN) {
         totalCount
       }
+      pr_closed: pullRequests(states: CLOSED) {
+        totalCount
+      }
       pr_merged: pullRequests(states: MERGED) {
         totalCount
       }