Multi scrape uri

[aRooooooba]

Proposed changes

Describe the use case and detail of the change. If this PR addresses an issue on GitHub, make sure to include a link to that issue here in this description (not in the title of the PR).

This is for solving the issue #229 .

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [x ] I have read the CONTRIBUTING guide
• [x ] I have proven my fix is effective or that my feature works
• [x ] I have checked that all unit tests pass after adding my changes
• [ x] I have ensured the README is up to date
• [x ] I have rebased my branch onto main
• [x ] I will ensure my PR is targeting the main branch and pulling from my branch on my own fork

[github-actions[bot]]

This PR is stale because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[anderslauri]

More suitable would be the proposal of introduce an annotation discovery here, esp. given Kubernetes. However, I understand that this probably won't become reality thus I will use this exporter as a sidecar.