Add an option for `clickhouse-client` with a list of tests for extensive fuzzing.
Processing of these tests will be interleaved between every other tests, so we will get much better fuzzing coverage.
processWithFuzzing(text);
        else
            processQueryText(text);
    }
    bool processQueryText(const String & text)
    {
        if (exit_strings.end() != exit_strings.find(trim(text, [](char c){ return isWhitespaceASCII(c) || c == ';'; })))
            return false;
        if (!config().has("multiquery"))
        {
            assert(!query_fuzzer_runs);
            processTextAsSingleQuery(text);
            return true;
        }
        if (query_fuzzer_runs)
        {
            processWithFuzzing(text);
            return true;
        }
        return processMultiQuery(text);
    }
    bool processMultiQuery(const String & all_queries_text)
    {
        const bool test_mode = config().has("testmode");
        {
            /// disable logs if expects errors
            ll_queries_text);
            if (test_hint.clientError() || test_hint.serverError())
                processTextAsSingleQuery("SET send_logs_level = 'fatal'");
            // Echo all queries if asked; makes for a more readable reference