Reorganize files in pglablib

The enitities and containers of the catalog now go into catalog subfolder
Models go into model

pglablib/catalog/PgAuthIdContainer.cpp

@@ -0,0 +1,27 @@
+#include "PgAuthIdContainer.h"
+#include "Pgsql_Col.h"
+
+std::string PgAuthIdContainer::getLoadQuery() const
+{
+	std::string result =
+		"SELECT oid, rolname, rolsuper, rolinherit, rolcreaterole, rolcreatedb, "
+		"  rolcanlogin, rolreplication, rolconnlimit, rolvaliduntil";
+	if (minimumVersion(90500))
+		result += ", rolbypassrls";
+
+	result += "\n"
+		   "FROM pg_authid";
+	return result;
+}
+
+PgAuthId PgAuthIdContainer::loadElem(const Pgsql::Row &row)
+{
+	Pgsql::Col col(row);
+	PgAuthId v;
+	col >> v.oid >> v.name >> v.super >> v.inherit >> v.createRole >> v.createDB
+			>> v.canlogin >> v.replication >> v.connLimit >> v.validUntil;
+	if (minimumVersion(90500))
+		col >> v.bypassRls;
+
+	return v;
+}