Restructure dbal folder: development, production, and shared

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

dbal/cpp/src/adapters/sql/postgres_adapter.cpp

@@ -1,12 +0,0 @@
-#include "sql_adapter.hpp"
-
-namespace dbal {
-namespace adapters {
-namespace sql {
-
-PostgresAdapter::PostgresAdapter(const SqlConnectionConfig& config)
-    : SqlAdapter(config, Dialect::Postgres) {}
-
-}
-}
-}