move catalog errors definition into errors file

[nopcoder]

No description provided.

[codecov-io]

Codecov Report

Merging #847 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #847      +/-   ##
==========================================
+ Coverage   44.21%   44.23%   +0.01%     
==========================================
  Files         137      137              
  Lines       10519    10519              
==========================================
+ Hits         4651     4653       +2     
+ Misses       5266     5265       -1     
+ Partials      602      601       -1     

Impacted Files	Coverage Δ
catalog/cataloger_diff.go	66.66% <ø> (ø)
catalog/validate.go	94.44% <ø> (ø)
catalog/cataloger_create_repository.go	65.38% <0.00%> (ø)
catalog/cataloger_create_branch.go	88.67% <0.00%> (+3.77%)	⬆️

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