Reorganize files in pglablib

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

pglablib/catalog/PgNamespace.h

@@ -0,0 +1,28 @@
+#ifndef PGNAMESPACE_H
+#define PGNAMESPACE_H
+
+#include "PgDatabaseObject.h"
+#include <QString>
+#include <libpq-fe.h>
+
+
+/// Object representing a namespace within a database
+class PgNamespace: public PgDatabaseObject {
+public:
+
+//	Oid oid = InvalidOid;
+//	QString name;
+	Oid owner = InvalidOid;
+	QString acl;
+
+	using PgDatabaseObject::PgDatabaseObject;
+
+//	bool operator==(Oid _oid) const { return oid == _oid; }
+//	bool operator==(const QString &n) const { return objectName() == n; }
+//	bool operator<(Oid _oid) const { return oid < _oid; }
+//	bool operator<(const PgNamespace &rhs) const { return oid < rhs.oid; }
+
+	bool isSystemCatalog() const;
+};
+
+#endif // PGNAMESPACE_H