重构 audit 相关代码, 改为面向对象实现

[LeoQuote]

audit 的代码实现的比较死, 没有模块化, 二次开发时不方便, 本 pr 将audit 相关代码转成面向对象的实现, 把 SqlWorkflow, WorkflowAudit 等对象作为属性传给新的 audit class, 方便audit 在处置时读取相关对象的信息, 进行个性化处置.

这次抽象出了

• create_audit
• operate
  两个顶层方法, 可以给 view 层调用, 分别用来创建审批流和 操作审批流

还有

• generate_audit_setting
• operate_pass
• operate_reject
• operate_abort

这几个小方法, 可供二次开发时继承覆盖

如开发者需要实现个性化审批流程, 可以预先建立权限组, 继承 AuditV2 , 并重新实现 generate_audit_setting 方法, 即可实现简单的自定义审批流.

[request-info]

你好!感谢你反馈的问题/bug，但是你的描述好像是空的，我们需要你完整的信息，这样才能帮你解决问题 如果不知道怎么写，在新建issue的时候有若干个模板可供选择，祝好！

[codecov]

Codecov Report

Attention: 82 lines in your changes are missing coverage. Please review.

Comparison is base (3cdfba0) 75.71% compared to head (328bd2f) 75.95%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2348      +/-   ##
==========================================
+ Coverage   75.71%   75.95%   +0.24%     
==========================================
  Files         108      111       +3     
  Lines       15727    15736       +9     
==========================================
+ Hits        11907    11953      +46     
+ Misses       3820     3783      -37     

Files	Coverage Δ
archery/settings.py	53.48% <100.00%> (+0.36%)	⬆️
common/utils/const.py	100.00% <100.00%> (ø)
sql/models.py	97.05% <100.00%> (+0.47%)	⬆️
sql/test_model.py	100.00% <100.00%> (ø)
sql/tests.py	99.35% <100.00%> (+0.56%)	⬆️
sql/utils/test_workflow_audit.py	100.00% <100.00%> (ø)
sql/utils/tests.py	100.00% <100.00%> (ø)
sql_api/serializers.py	79.88% <100.00%> (ø)
sql_api/tests.py	100.00% <ø> (ø)
conftest.py	93.75% <93.75%> (ø)
... and 5 more

... and 1 file with indirect coverage changes

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