refactor(vd960Loop): 算法回退到 DLD154V4B，四通道适配

- 用 DLD154V4B vd1_task/per_channel 替换 vds_task 复杂算法
- 移除 FUNCTION_B/二次判断/快速变化/多重确认等增强特性
- 保留平坦性离开算法 (CN200910309382)，每通道独立状态
- 灵敏度表改为 DLD154V4B 4级: {216,108,36,10} / {108,72,18,9}
- 清理废弃类型: FltHistoryManager, Loop_ACS_Info, StageRangeConfig 等
- 首次添加 vd960DBN 完整源码

vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c

@@ -0,0 +1,86 @@
+/********************************** (C) COPYRIGHT *******************************
+ * File Name          : ch32v20x_it.c
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2022/06/16
+ * Description        : Main Interrupt Service Routines.
+ *********************************************************************************
+ * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+ * Attention: This software (modified or not) and binary are used for 
+ * microcontroller manufactured by Nanjing Qinheng Microelectronics.
+ *******************************************************************************/
+
+/*********************************************************************
+ * INCLUDES
+ */
+#include "ch32v20x_it.h"
+#include "eth_driver.h"
+#include "CONFIG.h"
+
+/*********************************************************************
+ * LOCAL FUNCTIONS
+ */
+void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void BB_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void ETH_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void TIM2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+
+
+/*********************************************************************
+ * @fn      NMI_Handler
+ *
+ * @brief   This function handles NMI exception.
+ *
+ * @return  None
+ */
+void NMI_Handler(void)
+{
+}
+
+/*********************************************************************
+ * @fn      HardFault_Handler
+ *
+ * @brief   This function handles Hard Fault exception.
+ *
+ * @return  None
+ */
+void HardFault_Handler(void)
+{
+    NVIC_SystemReset();
+    while(1)
+    {
+    }
+}
+
+/*********************************************************************
+ * @fn      BB_IRQHandler
+ *
+ * @brief   BB Interrupt for BLE.
+ *
+ * @return  None
+ */
+void BB_IRQHandler(void)
+{
+    BB_IRQLibHandler();
+}
+
+
+/*********************************************************************
+ * @fn      ETH_IRQHandler
+ *
+ * @brief   This function handles ETH exception.
+ *
+ * @return  none
+ */
+void ETH_IRQHandler(void)
+{
+    WCHNET_ETHIsr();
+}
+
+void TIM2_IRQHandler( void ) 					                             	
+{
+    WCHNET_TimeIsr(WCHNETTIMERPERIOD);                                     
+	TIM_ClearITPendingBit(TIM2, TIM_IT_Update);			
+}
+