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.
// the format parser itself.
            auty->as<ASTInsertQuery>();
            if (insert_ast && insert_ast->data)
            {
                this_query_end = find_first_symbols<'\n'>(insert_ast->data, all_queries_end);
                insert_ast->end = this_query_end;
                query_to_send = all_queries_text.substr(
                    this_query_begin - all_queries_text.data(),
                    insert_ast->data - this_query_begin);
            }
            else
            {
                query_to_send = all_queries_text.substr(
                    this_query_begin - all_queries_text.data(),
                    this_query_end - this_query_begin);
            }
            // full_query is the query + inline INSERT data.
            full_query = all_queries_text.substr(
                this_query_begin - all_queries_text.data(),
                this_query_end - this_query_begin);
            // Look for the hint in the text of query + insert data, if any.
            // e.g. insert into t format CSV 'a' -- { serverError 123 }.
            TestHint test_hint(test_mode, full_query);
            expected_client_error = test_hint.clientError();
            expected_server_error = test_hint.serverError();
            if (query_fuzzer_runs)
            {
                if (!processWithFuzzing(full_query))
                    return false;
            }