improve package gerror, add HasCode/HasError function for package gerror

[gqcn]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2006 (0598357) into master (98b2e8a) will increase coverage by 0.01%.
The diff coverage is 84.03%.

@@            Coverage Diff             @@
##           master    #2006      +/-   ##
==========================================
+ Coverage   76.48%   76.49%   +0.01%     
==========================================
  Files         514      515       +1     
  Lines       46650    46666      +16     
==========================================
+ Hits        35679    35697      +18     
+ Misses       9000     8999       -1     
+ Partials     1971     1970       -1     

Flag	Coverage Δ
go-1.15-386	?
go-1.15-amd64	76.39% <84.03%> (+0.01%)	⬆️
go-1.16-386	76.42% <84.03%> (+<0.01%)	⬆️
go-1.16-amd64	?
go-1.17-386	76.47% <84.03%> (+0.04%)	⬆️
go-1.17-amd64	76.43% <84.03%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
contrib/drivers/sqlite/sqlite.go	77.77% <ø> (ø)
errors/gerror/gerror_api_option.go	70.00% <ø> (ø)
errors/gerror/gerror_api_stack.go	75.38% <75.38%> (ø)
errors/gerror/gerror_error.go	70.73% <80.00%> (+2.05%)	⬆️
errors/gerror/gerror_api_code.go	82.55% <82.55%> (ø)
errors/gerror/gerror_api.go	90.62% <90.62%> (ø)
contrib/drivers/clickhouse/clickhouse.go	70.23% <100.00%> (+0.60%)	⬆️
contrib/drivers/pgsql/pgsql.go	66.05% <100.00%> (+0.15%)	⬆️
errors/gerror/gerror_error_code.go	53.84% <100.00%> (ø)
util/gvalid/gvalid_validator_check_map.go	88.88% <100.00%> (+0.08%)	⬆️
... and 3 more

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