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

vd960Loop/libraries/cmsis/dsp/ComputeLibrary/README.md

@@ -0,0 +1,19 @@
+README
+======
+
+This folder is containing two files imported, and slightly modified, from the ComputeLibrary:
+
+    NEMath.h and arm_cl_tables.c 
+
+In the original compute library, there are instead two other files:
+
+    NEMath.h and NEMath.inl
+
+NEMath.inl is included from NEMath.h whereas in this CMSIS DSP implementation, there is no NEMath.inl and its content is copied into NEMath.h
+
+The tables contained in NEMath.inl have been moved to arm_cl_tables.c and finally the files are in C for the CMSIS DSP library and in C++ in the original Compute Library.
+
+Otherwise, the features and implementations are the same : a few optimized Neon functions.
+
+The license covering those files is different : It is a MIT license.
+Other parts of the CMSIS-DSP are covered with an Apache-2.0 license.