😵 Add new error type for failed SQL queries

[rowanseymour]

My cunning plan to get failing SQL queries into sentry didn't work very well because sentry trims the error message to 200 chars, so after all the wrapping you only get a few chars of SQL. This PR adds a new error type which can be used to attach SQL and args to the logrus entry as field data.

[codecov]

Codecov Report

Merging #457 (96970fe) into main (a4da43b) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #457      +/-   ##
==========================================
+ Coverage   56.49%   56.56%   +0.07%     
==========================================
  Files         123      123              
  Lines        8566     8581      +15     
==========================================
+ Hits         4839     4854      +15     
  Misses       2950     2950              
  Partials      777      777              

Impacted Files	Coverage Δ
core/tasks/handler/worker.go	50.47% <100.00%> (+0.23%)	⬆️
utils/dbutil/errors.go	100.00% <100.00%> (ø)
utils/dbutil/query.go	67.30% <100.00%> (ø)

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[nicpottier]

Huh, neat if it works!