feat(route): add 香港討論區 (#8101)

Co-authored-by: DIYgod <diy.d.god@gmail.com>

lib/router.js

@@ -4210,6 +4210,9 @@ router.get('/right/forum/:id?', lazyloadRouteHandler('./routes/right/forum'));
 // 香港經濟日報
 router.get('/hket/:category?', lazyloadRouteHandler('./routes/hket/index'));
 
+// 香港討論區
+router.get('/discuss/:fid', lazyloadRouteHandler('./routes/discuss'));
+
 // Uwants
 router.get('/uwants/:fid', lazyloadRouteHandler('./routes/uwants'));