Add maxErrorsPerFile blocking configuration

[mandrav]

The default max errors per file of 5 is too small IMHO. This commit makes this number user-configurable.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.13 🎉

Comparison is base (74516ca) 93.47% compared to head (64d23c2) 93.61%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #986      +/-   ##
==========================================
+ Coverage   93.47%   93.61%   +0.13%     
==========================================
  Files          63       63              
  Lines        5320     5323       +3     
==========================================
+ Hits         4973     4983      +10     
+ Misses        271      266       -5     
+ Partials       76       74       -2     

Impacted Files	Coverage Δ
config/blocking.go	88.63% <100.00%> (+0.54%)	⬆️
lists/list_cache.go	98.53% <100.00%> (+<0.01%)	⬆️
resolver/blocking_resolver.go	97.82% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[kwitsch]

Looks good to me. 👍

I'll approve it after the linter errors are fixed.

[ThinkChaos]

Thanks for the PR!

I pushed a couple commits to fix the lint error, add docs and a test, and allow using -1 as the value for "no limit".

FYI we also want to support percentage and switch the default to that, see #966.
I'll try to get that done before the next release so we can that in the config from the start. That'll involve making the config a string, so maybe -1 can be replaced with literally writing "no-limit".

[kwitsch]

• linter ok 👍
• documentation enhanced 👍
• unit test coverage 👍

The change to disable the error limit sounds reasonable since it's already an internal constant.

[mandrav]

Awesome, thanks!