CPU usage is misreported.

Currently "0 CPU" means "no CPU metric received in the previous ProfileEvents packet". But there can be many ProfileEvents packets and only a few with CPU increment.

That's why the CPU metric shows something weird like:
```
0
0
0
0
0
1234
0
0
0
...
```

This is unbearable, and the CPU metric should be either fixed or removed altogether.
{
        /// Get name of this file (path to file)
        const auto & in_file_node = parsed_insert_query->infile->as<ASTLiteral &>();
        const auto in_file = in_file_node.value.safeGet<std::string>();
        std::string compression_method;
        /// Compression method can be specified in query
        if (parsed_insert_query->compression)
        {
            const auto & compression_method_node = parsed_insert_query->compression->as<ASTLiteral &>();
            compression_method = compression_method_node.value.safeGet<std::string>();
        }
        String current_format = parsed_insert_query->format;
        if (current_format.empty())
            current_format = FormatFactory::instance().getFormatFromFileName(in_file, true);
        /// Create temporary storage file, to support globs and parallel reading
        StorageFile::CommonArguments args{
            WithContext(global_context),
            parsed_insert_query->table_id,
            current_format,
            getFormatSettings(global_context),
            compression_method,
            columns_description_for_query,
            ConstraintsDescription{},
            String{},
        };
        StoragePtr storage = std::make_shared<StorageFile>(in_file, global_context->getUserFilesPath(), args);
        storage->startup();
        SelectQueryInfo query_info;
        try
        {