Add automated health checks

[dylanschultzie]

There are really 3 parts to this PR:

1. I ran an auto-formatter, so it copied the formatting against the rest of the repo
2. Fixed self-hosted healthchecks, as the normal healthchecks.io uses a different ping path system
3. Added functionality for auto-created healthchecks. This only kicks in if the apiKey property is added, and is created based off of the name property (which defaults to networkName)

[tombeynon]

This is excellent, thanks so much @dylanschultzie!

The only part I'm considering changing is whether we should make that timeout param dynamic when creating the check. I assume that's setup to make a daily check right now?

I'll give this a bit of a test ASAP

[dylanschultzie]

@tombeynon the timeout param is set to every 24 hours, and grace period to 12. I tried to find a reasonable medium so as to not dilute the networks.local.json file, BUT I'm more than happy to add in extra params if you'd prefer.

[dylanschultzie]

Excuse me, it's the other way around - the grace period is 24 hours, and timeout is 12 hours.

[gh0stdotexe]

This is awesome - can't wait to give it a go!

[tombeynon]

All working great, thanks so much for this and the extra config additions @dylanschultzie 🚀