ci(docs): add link checker to existing CI to prevent broken docs links

[zyzzmohit]

Fixes #6549

Adds a lightweight link-checking step using lychee-action to the existing CI workflow that runs only when docs or README files change. It relies on a custom .lychee.toml configuration to ignore localhost, social networks, active repository edit links, and Hugo's internal relative routing paths to avoid false positives.

The action is pinned to its latest SHA (8646ba30) equivalent to v2.8.0 following the repository's existing security conventions.

Does this PR introduce a user-facing change?:

• How are users affected by this change: No, this is purely a CI pipeline enhancement for maintainers.
• Is this breaking change: No.
• How to migrate (if breaking change): N/A

[Ayushmore1214]

Nice work @zyzzmohit Looks good to me!

[zyzzmohit]

Thanks for the review @Ayushmore1214 I appreciate it :)

@Warashi @khanhtc1202 @ffjlabo Gentle ping on this, Whenever you have a moment, could a maintainer please approve the CI workflows to run and take a look at the proposed changes?

I can also update the branch with the latest master if needed once the CI checks are cleared to run. Let me know if any adjustments are required Thankss

[github-actions]

This PR is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[zyzzmohit]

Bumping this PR to remove the stale label!

Still actively waiting for a maintainer to trigger the CI workflows and review when you all have a moment. Thanks :)

[khanhtc1202]

@zyzzmohit Hi, this is a good idea, let me try running this CI on for this PR and see how the output looks like

[zyzzmohit]

Thank you @khanhtc1202 My apologies, I accidentally synced this branch with master which triggered a new merge commit and paused the CI workflows you were trying to run
Could you please click "Approve and Run" one more time when you get a chance? I will leave the branch completely alone so the tests can finish

[github-actions]

This PR is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This PR was closed because it has been stalled for 7 days with no activity. Feel free to reopen if still applicable.

[Ayushmore1214]

Hi @zyzzmohit any updates on this one ?

[Ayushmore1214]

@zyzzmohit last call any updates on this one ?