- Added some SearchRequest attributes ; now it's even simpler to add searchable fields

- Began decoupling of QueryBuilder from native MySQL method ; some works needs to be done on for the Repository object splitting also.

src/QueryBuilder/SqlQueryBuilder.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Ulmus\QueryBuilder;
+
+use Ulmus\Query;
+use Ulmus\Query\Fragment;
+use Ulmus\Query\QueryBuilderInterface;
+
+# TODO -> Extract from MysqlQueryBuilder to build an ISO/IEC 9075:2023 compatible layer for a basic SQL QueryBuilder
+class SqlQueryBuilder implements Query\QueryBuilderInterface
+{
+
+    public function push(Fragment $queryFragment): Query\QueryBuilderInterface
+    {
+        // TODO: Implement push() method.
+    }
+
+    public function pull(Fragment $queryFragment): Query\QueryBuilderInterface
+    {
+        // TODO: Implement pull() method.
+    }
+
+    public function render(bool $skipToken = false)
+    {
+        // TODO: Implement render() method.
+    }
+
+    public function reset(): void
+    {
+        // TODO: Implement reset() method.
+    }
+
+    public function getFragment(string $class, int $index = 0): ?Fragment
+    {
+        // TODO: Implement getFragment() method.
+    }
+
+    public function removeFragment(Fragment|\Stringable|array|string $fragment): void
+    {
+        // TODO: Implement removeFragment() method.
+    }
+}