documentation server and /doc route

Signed-off-by: ngn <ngn@ngn.tf>

doc/src/routes/notfound.c

@@ -0,0 +1,6 @@
+#include "routes.h"
+#include "util.h"
+
+void route_notfound(ctorm_req_t *req, ctorm_res_t *res) {
+  return util_send(res, 404, NULL);
+}