restructure a bit

http/src/server/routes/forum.rs

@@ -0,0 +1,20 @@
+use super::*;
+
+pub fn make<T: Types>(router: RouterScope<T>) -> RouterScope<T> {
+    router
+        .nest("/boards", boards)
+        .nest("/threads", threads)
+        .nest("/messages", messages)
+}
+
+fn boards<T: Types>(router: RouterScope<T>) -> RouterScope<T> {
+    router
+}
+
+fn threads<T: Types>(router: RouterScope<T>) -> RouterScope<T> {
+    router
+}
+
+fn messages<T: Types>(router: RouterScope<T>) -> RouterScope<T> {
+    router
+}