feat: make daemon logging more verbose

daemon/src/main.c

@@ -85,10 +85,13 @@ int main() {
 
   sigaction(SIGINT, &signal_action, NULL);
 
+  printf("Started daemon\n");
+
   while (1) {
     measurement_t measurement;
 
     if (recv_userspace_message(&userspace_receive_handle, &measurement) != 0) {
+      perror("Error while receiving data\n");
       continue;
     }