added blob interface to backend binder classes

backends/postgres/src/postgres_dialect.cpp

@@ -2,13 +2,17 @@
 
 #include "matador/sql/dialect_builder.hpp"
 
-[[maybe_unused]] const matador::sql::dialect* get_dialect() {
+[[maybe_unused]] const matador::sql::dialect *get_dialect()
+{
   using namespace matador::sql;
   const static dialect d = dialect_builder::builder()
     .create()
     .with_placeholder_func([](size_t index) {
       return "$" + std::to_string(index);
     })
+    .with_data_type_replace_map({
+                                  {data_type_t::type_blob, "BYTEA"}
+                                })
     .with_default_schema_name("public")
     .build();
   return &d;

backends/postgres/src/postgres_parameter_binder.cpp

@@ -134,6 +134,11 @@ void postgres_parameter_binder::bind(size_t pos, const std::string &str, size_t
   bind(pos, str);
 }
 
+void postgres_parameter_binder::bind(size_t pos, const utils::blob &blob)
+{
+
+}
+
 const std::vector<const char *> &postgres_parameter_binder::params() const
 {
   return params_;