changed LuDatabaseProvider to interface

src/Utils/DataAccess/LuDataAccess.php

 use Luticate\Utils\Dbo\LuDbo;
 use Luticate\Utils\Dbo\LuPaginatedDbo;
 
-abstract class LuDataAccess extends LuDatabaseProvider {
+abstract class LuDataAccess implements LuDatabaseProvider {
 
     protected static $_connection = "mydb";
     protected static $_table = "mydb_table";

src/Utils/DataAccess/LuDatabaseProvider.php

 
 namespace Luticate\Utils\DataAccess;
 
-
-abstract class LuDatabaseProvider
+interface LuDatabaseProvider
 {
-    public static function setupDatabases($databases)
-    {
-    }
+    public static function setupDatabases($databases);
 }