Reorganize files in pglablib

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

pglablib/catalog/PgCollationContainer.h

@@ -0,0 +1,25 @@
+#ifndef PGCOLLATIONCONTAINER_H
+#define PGCOLLATIONCONTAINER_H
+
+#include "PgContainer.h"
+#include "PgCollation.h"
+
+namespace Pgsql {
+
+	class Result;
+
+}
+
+
+class PgCollationContainer: public PgContainer<PgCollation> {
+public:
+	using PgContainer<PgCollation>::PgContainer;
+
+	virtual std::string getLoadQuery() const override;
+protected:
+	PgCollation loadElem(const Pgsql::Row &row) override;
+private:
+};
+
+
+#endif // PGCOLLATIONCONTAINER_H