Add variants of File:read and love.filesystem.read which take an enum to determine whether they return a FileData or string.

src/modules/data/wrap_DataModule.cpp

@@ -321,7 +321,7 @@ int w_hash(lua_State *L)
 	return 1;
 }
 
-static int w_pack(lua_State *L)
+int w_pack(lua_State *L)
 {
 	ContainerType ctype = luax_checkcontainertype(L, 1);
 	const char *fmt = luaL_checkstring(L, 2);