sysutils/py-healthchecks: New port: Open-source cron job and background task monitoring service

Healthchecks is a cron job monitoring service. It listens for HTTP
requests and email messages ("pings") from your cron jobs and
scheduled tasks ("checks"). When a ping does not arrive on time,
Healthchecks sends out alerts.

Healthchecks comes with a web dashboard, API, 25+ integrations for
delivering notifications, monthly email reports, WebAuthn 2FA
support, team management features: projects, team members, read-only
access.

Approved by: acm (mentor)