ci: add link check workflow

[jooola]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.67%. Comparing base (c7b311d) to head (457311e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1224   +/-   ##
=======================================
  Coverage   72.67%   72.67%           
=======================================
  Files         302      302           
  Lines       10953    10954    +1     
=======================================
+ Hits         7960     7961    +1     
  Misses       2125     2125           
  Partials      868      868           

Flag	Coverage Δ
e2e	51.85% <100.00%> (+<0.01%)	⬆️
unit	67.63% <100.00%> (+<0.01%)	⬆️

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[jooola]

Far from ready, just wanted to get an overview of how many links are broken/redirected.