seata saga 主体框架搭建

[wt-better]

What would you like to be added:
saga是常见的分步事务解决方案，适用于长流程事务，在seata java里面以状态机的方式支持了saga模式，期望在go里面也支持下。

Why is this needed:
搭建状态机的主体调用框架（需要考虑流式编排的场景）

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Title: seata saga main frame construction

[xjlgod]

这是一个长期的规划，还是说单独的一个待解决的框架搭建任务？

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Is this a long-term plan, or is it a separate framework construction task to be solved?

[wt-better]

this is a long-term plan,and depends on some modifications on the java side,it`s in progress. as: exlucde spring depends,spring el,spring beans

if you has some idea,weclome to communicate.

[xjlgod]

this is a long-term plan,and depends on some modifications on the java side,it`s in progress. as: exlucde spring depends,spring el,spring beans

if you has some idea,weclome to communicate.

ok, I am interested in it. If there are issues about it, I will help to complete it.

[CocaineCong]

Hey, I am interested too. can i join in ?

[wt-better]

see feature/saga branch