esp_ringbuf: migrated esp_ringbuf component tests to pytest framework

This commit migrates the esp_ringbuf tests to the pytest framework.

components/esp_ringbuf/test_apps/pytest_esp_ringbuf.py

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: CC0-1.0
+
+import pytest
+from pytest_embedded import Dut
+
+
+@pytest.mark.esp32
+@pytest.mark.esp32s2
+@pytest.mark.esp32c3
+@pytest.mark.generic
+@pytest.mark.parametrize(
+    'config',
+    [
+        'default',
+        'ringbuf_flash'
+    ]
+)
+def test_esp_ringbuf(dut: Dut) -> None:
+    dut.expect('Press ENTER to see the list of tests')
+    dut.write('*')
+    dut.expect_unity_test_output()