feat: 集成 EasyLogger 并更新 UART DMA 回调

- 集成 EasyLogger，增强日志功能。
- 更新 UART DMA 回调以使用 EasyLogger 记录日志。
- 重新格式化 README.md，提升可读性和清晰度。
- 添加新的 CMSIS DSP 和 FreeRTOS 源文件。
- 更新 CMake 配置以包含 EasyLogger 源文件。

此提交改进了日志功能，为后续开发做好了准备。

Core/Src/dma.c

@@ -0,0 +1,61 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    dma.c
+  * @brief   This file provides code for the configuration
+  *          of all the requested memory to memory DMA transfers.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "dma.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*----------------------------------------------------------------------------*/
+/* Configure DMA                                                              */
+/*----------------------------------------------------------------------------*/
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/**
+  * Enable DMA controller clock
+  */
+void MX_DMA_Init(void)
+{
+
+  /* DMA controller clock enable */
+  __HAL_RCC_DMA1_CLK_ENABLE();
+
+  /* DMA interrupt init */
+  /* DMA1_Channel4_IRQn interrupt configuration */
+  HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 5, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Channel4_IRQn);
+  /* DMA1_Channel5_IRQn interrupt configuration */
+  HAL_NVIC_SetPriority(DMA1_Channel5_IRQn, 5, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Channel5_IRQn);
+  /* DMA1_Channel7_IRQn interrupt configuration */
+  HAL_NVIC_SetPriority(DMA1_Channel7_IRQn, 5, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Channel7_IRQn);
+
+}
+
+/* USER CODE BEGIN 2 */
+
+/* USER CODE END 2 */
+