add onnx pack

components/ai/onnx/operator_int/dense.c

@@ -0,0 +1,19 @@
+#include "onnx.h"
+
+void dense(const int *input,              // pointer to vector
+           const int *weight,             // pointer to matrix
+           const uint16_t dim_vec,         // length of the vector
+           const uint16_t num_of_rows,     // numCol of A
+           const int *bias,
+           int *output)                   // output operand
+{
+    for (int i = 0; i < num_of_rows; i++)
+    {
+        int ip_out = bias[i];
+        for (int j = 0; j < dim_vec; j++)
+        {
+            ip_out += input[j] * weight[i * dim_vec + j];
+        }
+        output[i] = ip_out;
+    }
+}