ETCP: Fix protocol parsing and crypto nonce handling

- Fixed ACK section parsing (elm_cnt and till offset)
- Fixed payload section to include seq number in packet
- Fixed assembly trigger condition (last_delivered_id+1==seq)
- Crypto: Added nonce transmission in encrypted packets
- Crypto: Fixed nonce generation with usec timestamp
- Reduced debug verbosity in connection handling
- Added unknown section type handling

debug_ll_queue.c

@@ -0,0 +1,38 @@
+#include "lib/ll_queue.h"
+#include "lib/u_async.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct {
+    int id;
+    char name[32];
+    int value;
+} test_data_t;
+
+int main() {
+    struct UASYNC* ua = uasync_create();
+    struct ll_queue* q = queue_new(ua, 0);
+    
+    /* Create test data */
+    test_data_t* data1 = (test_data_t*)queue_data_new(sizeof(test_data_t));
+    data1->id = 1;
+    strcpy(data1->name, "test1");
+    data1->value = 100;
+    
+    printf("Created data: id=%d, name=%s, value=%d\n", data1->id, data1->name, data1->value);
+    printf("Data pointer: %p\n", data1);
+    
+    /* Put data into queue */
+    queue_data_put(q, data1, data1->id);
+    printf("After put: queue count = %d\n", queue_entry_count(q));
+    
+    /* Get data from queue */
+    test_data_t* retrieved = (test_data_t*)queue_data_get(q);
+    printf("Retrieved pointer: %p\n", retrieved);
+    printf("Retrieved data: id=%d, name=%s, value=%d\n", retrieved->id, retrieved->name, retrieved->value);
+    
+    queue_free(q);
+    uasync_destroy(ua, 0);
+    return 0;
+}