Add new ssl/cert-monitoring integration(s)

[calebhailey]

TODO:

• [x] Init integration from template (see: https://github.com/sensu/catalog/blob/main/templates)
  • [x] Add README.md
  • [x] Add sensu-integration.yaml
  • [x] Add CHANGELOG.md
• [x] Add logo.png
• [x] Add sensu-resources.yaml

We might not be able to recreate most of these, but here are the old ruby-based SSL monitoring examples:

• [ ] ssl/check-java-keystore-cert
• [ ] ssl/check-ssl-anchor
• [x] ssl/check-ssl-cert
• [ ] ssl/check-ssl-crl
• [ ] ssl/check-ssl-host
• [ ] ssl/check-ssl-hsts-preloadable
• [ ] ssl/check-ssl-hsts-status
• [ ] ssl/check-ssl-qualys
• [ ] ssl/check-ssl-root-issuer

[calebhailey]

See https://github.com/sensu/catalog/tree/main/integrations/dns/dns-monitoring for inspiration/reference – a reusable integration (see: integrations/dns/dns-monitoring/sensu-integration.yaml#L157-L162)