Implement link checker

[Dr-Electron]

Description of change

We added a new link checker implementation with matching workflow. The workflow runs every Monday and creates an issue with all the broken links it found.

It still has some false positives, but I guess it is good enough for now.

• Action with broken links: https://github.com/Dr-Electron/iota-wiki/actions/runs/6384126170
  • Created issue: https://github.com/Dr-Electron/iota-wiki/issues/9

• Action with no broken links: https://github.com/Dr-Electron/iota-wiki/actions/runs/6384844544/job/17328341869

Links to any relevant issues

Fixes #1156

Type of change

• Enhancement (a non-breaking change which adds functionality)

Change checklist

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own changes
• I have made sure that added/changed links still work
• I have commented my code, particularly in hard-to-understand areas

[github-actions]

This pull request has been deployed to Vercel.

Latest commit: 5a911e6

✅ Preview: https://iota-wiki-qb41wcvzu-iota1.vercel.app