feat: add abstract methods for table and column retrieval in base connector

Author: NoOne7135

adminforth/dataConnectors/baseConnector.ts

@@ -353,6 +353,13 @@ export default class AdminForthBaseConnector implements IAdminForthDataSourceCon
         return newRecord;
     });
   }
+  async getAllTables(): Promise<string[]> {
+    throw new Error('getAllTables() must be implemented in subclass');
+  }
+
+  async getAllColumnsInTable(tableName: string): Promise<string[]> {
+    throw new Error('getAllColumnsInTable() must be implemented in subclass');
+  }
 
 
 }