[FEATURE] Support EOL Metrics

[davidcollom]

Is your feature request related to a problem? Please describe. Whilst we expose metrics for the latest container images, engineers may need or what to know if and when the version of deployed components are becoming End of Life

Describe the solution you'd like By utilising the data/api available via https://endoflife.date/docs/api - we would expose multiple metrics to allow engineering teams to discover if/when their product/tool is becoming unsupported.

Suggestive metrics would be: version_checker_is_endoflife as a binary (1 = Yes, 0=No) version_checker_endoflife_timestamp as timestamp of when this component will be out of support

As End of Life product names and container image names may not match, and may not use tags (Digest's or Internal generated tags) We may need to allow for overriding of these via new pod annotations, some suggestions may be as follows:

eol-product.version-checker.io/dind=docker-engine # the End of Life Product name
eol-cycle.version-checker/dind=28.1 # Stating which Major/Minor release - however this may be a "stable", "rapid", 

Describe alternatives you've considered The EndofLife Project provide the static computed data in json format disocverable here, it may be that we look to embed this into version-checker: E.G: https://github.com/endoflife-date/release-data/blob/0984617d58755a26f68adabf6f6ad3755a6b2315/releases/angular.json

Additional context

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