Saga end-to-end verification

[Code-Fight]

What this PR does:
saga e2e test

The test requires pulling the latest Seata Saga branch code, replacing it locally, and then performing verification.
测试需要拉取最新的seata saga分支代码进行本地replace，后进行验证
saga 已合并

Which issue(s) this PR fixes:

The related PR of seata-go

You should pay attention to items below to ensure your pr passes our ci test
We do not merge pr with ci tests failed

• All ut passed (run 'go test ./...' in project root)
• After go-fmt ed , run 'go fmt project' using goland.
• Golangci-lint passed, run 'sudo golangci-lint run' in project root.
• Your new-created file needs to have apache license at the top, like other existed file does.

[xjlgod]

why ci is not passed

[xjlgod]

I remember if there was talk of an e2e framework before, did this use that?

[Code-Fight]

why ci is not passed
Because it depends on the implementation of seata-go, and the PR over there hasn’t been merged yet.

[Code-Fight]

I remember if there was talk of an e2e framework before, did this use that?

No new e2e framework has been introduced for now; this is temporary and only intended to facilitate verification of the saga implementation.