Reorganize files in pglablib

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

pglablib/catalog/PgDatabaseContainer.h

@@ -0,0 +1,26 @@
+#ifndef PGDATABASECONTAINER_H
+#define PGDATABASECONTAINER_H
+
+#include "PgContainer.h"
+#include "PgDatabase.h"
+
+namespace Pgsql {
+
+	class Result;
+
+}
+
+
+class PgDatabaseContainer: public PgContainer<PgDatabase> {
+public:
+	//explicit PgDatabaseContainer(PgDatabaseCatalog *cat);
+	using PgContainer<PgDatabase>::PgContainer;
+
+	virtual std::string getLoadQuery() const override;
+protected:
+	PgDatabase loadElem(const Pgsql::Row &row) override;
+private:
+};
+
+
+#endif // PGDATABASECONTAINER_H