feature: 事件&单节点执行&流程重演&流程回滚

[hanshuaikang]

No description provided.

[codecov]

Codecov Report

Merging #205 (0fd44da) into master (01ed48d) will increase coverage by 2.39%.
Report is 8 commits behind head on master.
The diff coverage is 94.75%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #205      +/-   ##
==========================================
+ Coverage   86.81%   89.21%   +2.39%     
==========================================
  Files          61       61              
  Lines        3133     3486     +353     
==========================================
+ Hits         2720     3110     +390     
+ Misses        413      376      -37     

Files	Coverage Δ
bamboo_engine/api.py	61.23% <100.00%> (+2.55%)	⬆️
bamboo_engine/config.py	100.00% <100.00%> (ø)
bamboo_engine/eri/interfaces.py	99.57% <100.00%> (+0.02%)	⬆️
bamboo_engine/eri/models/event.py	100.00% <100.00%> (ø)
bamboo_engine/eri/models/node.py	100.00% <100.00%> (ø)
bamboo_engine/exceptions.py	90.00% <100.00%> (+0.71%)	⬆️
...oo_engine/handlers/conditional_parallel_gateway.py	92.42% <100.00%> (ø)
bamboo_engine/states.py	89.18% <100.00%> (+2.09%)	⬆️
bamboo_engine/utils/constants.py	100.00% <100.00%> (ø)
bamboo_engine/utils/expr.py	100.00% <100.00%> (ø)
... and 8 more

... and 3 files with indirect coverage changes

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