EPF - Update 0

I'm contributing in a best effort capacity because I still have a full time job, but I've found something interesting to work on.

During my setup of a staking node, I wanted to check if my node was accessible from the outside world, and I didn't find a tool for this. So I thought this would be a pretty interesting thing to work on. I posted my idea in the EPF Discord channel and Mario suggested I could add it to Node Crawler.

It looks like it could use some TLC. The code hasn't been updated for some time, so it could do with some package/language updates, along with some refactoring to make it more like a standard Go project structure.

So I think this should be a pretty nice thing to work on, fix the above issues I've seen, and then add my idea to scan a node endpoint to make sure it's exposed as expected.

I think it would be pretty nice to also add some beacon chain stats to the project, and to add a beacon client scan as well.