Correctly allocate cb_crc_status for CRC.indication

Now allocates memory for `uint8_t* cb_crc_status` before pulling in unpack procedure.

Add utility functions related to CRC.indication.
Extra utility function to calculate allocated memory added.

nfapi/open-nFAPI/nfapi/src/nfapi_p7.c

@@ -4657,6 +4657,7 @@ uint8_t unpack_nr_crc_indication_body(nfapi_nr_crc_t *value, uint8_t **ppReadPac
     return 0;
   }
   if (value->num_cb != 0) {
+    value->cb_crc_status = calloc((value->num_cb / 8) + 1, sizeof(uint8_t));
     if (!pullarray8(ppReadPackedMsg,
                     value->cb_crc_status,
                     (int)(value->num_cb / 8) + 1,