feat(land): add skipChecks option

[mmarchini]

skipChecks will allow skipping certain checks. Useful to skip "commit
after last approval" on commit queue.

Ref: nodejs/node#34770

[mmarchini]

I'm not 100% sure we're going to use this, but I guess it doesn't hurt to have it either.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.70%. Comparing base (4b32ebc) to head (ad6349c).
⚠️ Report is 401 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #475 +/- ## ========================================== + Coverage 82.56% 82.70% +0.13%  ========================================== Files 34 34 Lines 1658 1671 +13 ========================================== + Hits 1369 1382 +13  Misses 289 289 

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[codebytere]

We should add this option to documentation as well, perhaps with an accompanying example :)

[codebytere]

@mmarchini could you rebase this?

[github-actions]

This PR is stale because it has been open many days with no activity. It will be closed soon unless the stale label is removed or a comment is made.