Extended the plugin system to allow for dynamic runtime bindings between modules.

As a test implementation, this allows the TablesPage to open a CrudTab for a table/view without
the need for TablesPage, CrudTab and DatabaseWindow to know anything about each other.

pglab/CrudTab.h

@@ -4,6 +4,7 @@
 #include "catalog/PgClass.h"
 #include <QWidget>
 #include "plugin_support/PluginContentWidget.h"
+#include "plugin_support/PluginModule.h"
 #include <memory>
 #include <optional>
 
@@ -22,7 +23,7 @@ public:
 	explicit CrudTab(IPluginContentWidgetContext *context, QWidget *parent = nullptr);
 	~CrudTab() override;
 
-	void setConfig(std::shared_ptr<OpenDatabase> db, const PgClass &table);
+	void setConfig(Oid oid);
 
 	void refresh();
 
@@ -41,4 +42,17 @@ private slots:
 	void headerCustomContextMenu(const QPoint &pos);
 };
 
+class CrudPageModule: public PluginModule {
+	Q_OBJECT
+public:
+	using PluginModule::PluginModule;
+
+	void init();
+private slots:
+
+private:
+	void moduleAction_open(IPluginContentWidgetContext* context, const ModuleActionParameters &params);
+};
+
+
 #endif // CRUDTAB_H