Method release

examples/server/server.cpp:457–463

    }

    void release() {
        if (state == IDLE || state == PROCESSING)
        {
            t_token_generation = (ggml_time_us() - t_start_genereration) / 1e3;
            command = RELEASE;
        }
    }

    json get_formated_timings() {
        return json