Reorganize files in pglablib

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

pglablib/catalog/PgTablespaceContainer.h

@@ -0,0 +1,24 @@
+#ifndef PGTABLESPACECONTAINER_H
+#define PGTABLESPACECONTAINER_H
+
+#include "PgContainer.h"
+#include "PgTablespace.h"
+
+namespace Pgsql {
+
+	class Result;
+
+}
+
+
+class PgTablespaceContainer: public PgContainer<PgTablespace> {
+public:
+	using PgContainer<PgTablespace>::PgContainer;
+
+	virtual std::string getLoadQuery() const override;
+protected:
+	PgTablespace loadElem(const Pgsql::Row &row) override;
+private:
+};
+
+#endif // PGTABLESPACECONTAINER_H