heap_trace_alloc_pause() function

- ESP_ERR_NOT_SUPPORTED Project was compiled without heap tracing enabled in menuconfig. - ESP_ERR_INVALID_STATE Heap tracing was not in progress. - ESP_OK Heap tracing paused.

This function puts the heap tracing in the state where the new allocations will no longer be traced but the free will still be. This can be used to e.g., strategically monitor a set of allocations to make sure each of them will get freed without polluting the list of records with unwanted allocations.