fix(mdns): Refactor freertos linux compat layers

Move it to a separate component that could be shared by multiple network
libs.

common_components/linux_compat/freertos/include/esp_task.h

@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#define ESP_TASK_PRIO_MAX 25
+#define ESP_TASKD_EVENT_PRIO 5
+#define ESP_TASKD_EVENT_STACK 1024