Implement #4442 , goctl generate unit test files for api handler and logic

[studyzy]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.54%. Comparing base (8690859) to head (bfa0586).
Report is 160 commits behind head on master.

Additional details and impacted files

see 4 files with indirect coverage changes

[kesonan]

2. It is required that goctl description for flag goctl api -test, pls reference file tools/goctl/internal/flags/default_en.json

[studyzy]

2. It is required that goctl description for flag goctl api -test, pls reference file tools/goctl/internal/flags/default_en.json

Added in new commit.