query: add stubs for 'bind' types

CMakeLists.txt

@@ -29,6 +29,7 @@ add_library(cruft-db
 
     query/fwd.hpp
     query/binary.hpp
+    query/bind.hpp
     query/cast.hpp
     query/expression.hpp
     query/function.hpp

query/bind.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "./expression.hpp"
+
+#include <cruft/util/fixed_string.hpp>
+
+
+template <cruft::fixed_string NameV>
+struct bind_t : expression_t<bind_t<NameV>> {
+    static constexpr auto name = NameV;
+};