用 WorkflowType 和 WorkflowStatus 两个 enum 替换WorkflowDict

[LeoQuote]

enum 在这里更合适, dict 使用不是很方便, 编辑器没有 hint, type hint 也没有.

以后直接 WorkflowType.QUERY 就可以引用.

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (1fbf6ed) 75.68% compared to head (280f92e) 75.69%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2344   +/-   ##
=======================================
  Coverage   75.68%   75.69%           
=======================================
  Files         108      108           
  Lines       15701    15707    +6     
=======================================
+ Hits        11883    11889    +6     
  Misses       3818     3818           

Files	Coverage Δ
common/utils/const.py	100.00% <100.00%> (ø)
common/workflow.py	22.50% <100.00%> (ø)
sql/archiver.py	57.03% <100.00%> (ø)
sql/models.py	96.57% <100.00%> (-0.01%)	⬇️
sql/notify.py	89.81% <100.00%> (ø)
sql/sql_workflow.py	62.23% <100.00%> (ø)
sql/tests.py	98.77% <100.00%> (ø)
sql/utils/execute_sql.py	81.35% <100.00%> (ø)
sql/utils/tests.py	100.00% <100.00%> (ø)
sql/utils/workflow_audit.py	97.01% <100.00%> (ø)
... and 4 more

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.