Add channel_get_timespec()

src/channel.c

@@ -23,6 +23,14 @@ int channel_get_total() {
   return s_num_channels;
 }
 
+struct mgos_timespec *channel_get_timespec(int idx) {
+  if (idx < 0 || idx >= channel_get_total()) {
+    return false;
+  }
+
+  return s_channels[idx].timespec;
+}
+
 bool channel_init(const char *fn) {
   char *            json;
   void *            h = NULL;