feat: errors support format

[BaiZe1998]

What type of PR is this?

feat

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• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.

Translate the PR title into Chinese.

支持error的格式化

More detail description for this PR(en: English/zh: Chinese).

en: Add three methods: errors.Newf, errors.NewPublicf, errors.NewPrivatef whit unit tests.

zh: 添加了三个方法：errors.Newf，errors.NewPublicf，errors.NewPrivatef，并补充了单元测试。

Which issue(s) this PR fixes:

Fixes #248

[codecov]

Codecov Report

Base: 59.18% // Head: 59.17% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (829adb0) compared to base (0bebcc5).
Patch coverage: 23.07% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #258      +/-   ##
===========================================
- Coverage    59.18%   59.17%   -0.01%     
===========================================
  Files           79       79              
  Lines         8114     8150      +36     
===========================================
+ Hits          4802     4823      +21     
- Misses        2958     2972      +14     
- Partials       354      355       +1     

Impacted Files	Coverage Δ
pkg/route/engine.go	61.98% <0.00%> (-2.38%)	⬇️
pkg/common/errors/errors.go	87.95% <100.00%> (+7.43%)	⬆️
pkg/common/timer/timer.go	61.90% <0.00%> (-19.05%)	⬇️
pkg/app/client/client.go	74.02% <0.00%> (+2.59%)	⬆️

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[li-jin-gou]

@BaiZe1998 Hello, need to fix ci.