Rework collect_container_info (..) functions

[pwojcikdev]

This simplifies how container info functionality is implemented for node components, avoiding unnecessary and annoying boilerplate.

Previously:

std::unique_ptr<nano::container_info_component> nano::block_processor::collect_container_info (std::string const & name)
{
	nano::lock_guard<nano::mutex> guard{ mutex };

	auto composite = std::make_unique<container_info_composite> (name);
	composite->add_component (std::make_unique<container_info_leaf> (container_info_entry{ "blocks", queue.size (), 0 }));
	composite->add_component (std::make_unique<container_info_leaf> (container_info_entry{ "forced", queue.size ({ nano::block_source::forced }), 0 }));
	composite->add_component (queue.collect_container_info ("queue"));
	return composite;
}

Now:

nano::container_info nano::block_processor::container_info () const
{
	nano::lock_guard<nano::mutex> guard{ mutex };

	nano::container_info info;
	info.put ("blocks", queue.size ());
	info.put ("forced", queue.size ({ nano::block_source::forced }));
	info.add ("queue", queue.container_info ());
	return info;
}