Add byContains and byJsonPath throughout

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

tests/unit/Query/FindTest.php

@@ -54,8 +54,8 @@ class FindTest extends TestCase
     public function testByJsonPathSucceedsForPostgreSQL(): void
     {
         Configuration::$mode = Mode::PgSQL;
-        $this->assertEquals('SELECT data FROM light WHERE data @? :path::jsonpath', Find::byJsonPath('light'),
-            'SELECT query not generated correctly');
+        $this->assertEquals('SELECT data FROM light WHERE jsonb_path_exists(data, :path::jsonpath)',
+            Find::byJsonPath('light'), 'SELECT query not generated correctly');
     }
 
     #[TestDox('By JSON Path fails for non PostgreSQL')]