Move myeclpay tests to core tests

Author: warix8

tests/modules/test_myeclpay.py renamed to tests/core/test_myeclpay.py

@@ -296,7 +296,7 @@ async def test_webhook_payment_callback(
 ) -> None:
     # We patch the callback to be able to check if it was called
     mocked_callback = mocker.patch(
-        "tests.test_payment.callback",
+        "tests.core.test_payment.callback",
     )
 
     # We patch the module_list to inject our custom test module
@@ -337,7 +337,7 @@ async def test_webhook_payment_callback_fail(
 ) -> None:
     # We patch the callback to be able to check if it was called
     mocked_callback = mocker.patch(
-        "tests.test_payment.callback",
+        "tests.core.test_payment.callback",
         side_effect=ValueError("Test error"),
     )