workflow async execute

[nicedream7758]

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1. Is this request related to a challenge you're experiencing?

now, we use service api post to /workflow/run, but it is a sync api, some times it cost a lot of time, will reduce system performance

2. Describe the feature you'd like to see

maybe can add another interface, like /workflow/run/async, run workflow on bakend

3. How will this feature improve your workflow or experience?

it can be quickly return when exec any long time workflow, reduce the request time, actually we did this in local env.

4. Additional context or comments

No response

5. Can you help us with this feature?

• I am interested in contributing to this feature.