feat(reflection): Bring in new libconfig

This version of fourdst (v0.9.14) brings in the version libconfig which
includes reflection based config filed (v2.0.2).

This is a breaking change as any code which used versions of libconfig <
v2.0.0 will no longer function when linked against this version of
fourdst

src-pybind/bindings.cpp

@@ -21,6 +21,6 @@ PYBIND11_MODULE(_phys, m) {
     auto constMod = m.def_submodule("constants", "Constants-module bindings");
     register_const_bindings(constMod);
 
-    auto configMod = m.def_submodule("config", "Configuration-module bindings");
-    register_config_bindings(configMod);
-}
+    const auto configMod = m.def_submodule("config", "Configuration-module bindings");
+    register_config_enums(configMod);
+}