新增：读码器功能模块，集成华睿读码器并初步实现读码功能

C3032

2026-03-18 32304b0a0a2e4af174c0feea96d2387bb75a2556

 LB_VisionFlowNode/IFlowContext.cs

@@ -280,6 +280,9 @@
        [Node("相机取图", "取像工具", "Basic", "相机取图")]
        public void 相机取图(FlowNode node) { RunNodeAsync(node); }

        [Node("读码工具", "取像工具", "Basic", "读码工具")]
        public void 读码工具(FlowNode node) { RunNodeAsync(node); }

        [Node("Halcon2D斑点工具", "Halcon2D工具", "Basic", "Halcon2D斑点工具")]
        public void Halcon2D斑点工具(FlowNode node) { RunNodeAsync(node); }