Add tab with namespaces (schema's)

pglab/CatalogInspector.h

@@ -8,6 +8,7 @@
 class CatalogFunctionsPage;
 class CatalogSequencesPage;
 class CatalogTablesPage;
+class CatalogNamespacePage;
 class OpenDatabase;
 class PgDatabaseCatalog;
 class QTabWidget;
@@ -24,6 +25,7 @@ public:
 	CatalogTablesPage *tablesPage();
 private:
 	QTabWidget *m_tabWidget = nullptr;
+	CatalogNamespacePage *m_namespacePage = nullptr;
 	CatalogTablesPage *m_tablesPage = nullptr;
 	CatalogFunctionsPage *m_functionsPage = nullptr;
 	CatalogSequencesPage *m_sequencesPage = nullptr;