Add byContains and byJsonPath throughout

- Change to JSON Path function to work around PDO syntax quirk

tests/unit/Query/DeleteTest.php

@@ -53,8 +53,8 @@ class DeleteTest extends TestCase
     public function testByJsonPathSucceedsForPostgreSQL(): void
     {
         Configuration::$mode = Mode::PgSQL;
-        $this->assertEquals('DELETE FROM here WHERE data @? :path::jsonpath', Delete::byJsonPath('here'),
-            'DELETE statement not constructed correctly');
+        $this->assertEquals('DELETE FROM here WHERE jsonb_path_exists(data, :path::jsonpath)',
+            Delete::byJsonPath('here'), 'DELETE statement not constructed correctly');
     }
 
     #[TestDox('By JSON Path fails for non PostgreSQL')]