Support Async flow function

[brynn-code]

Discussed in #1581

^{Originally posted by punitarani December 23, 2023}
I have created a flow and loaded it as a function similar to get-started/flow-as-function.

f = load_flow(...)
output = f(input=input)

Is there a way to load flow as an async function?

I want to run multiple flows in parallel and asynchronously.

output = await f(input=input)

Is this possible?

[github-actions]

Hi, we're sending this friendly reminder because we haven't heard back from you in 30 days. We need more information about this issue to help address it. Please be sure to give us your input. If we don't hear back from you within 7 days of this comment, the issue will be automatically closed. Thank you!

[sashokbg]

Hello, I am also interested in this feature. We are developping a "batch" mode and we would like to run multiple flow functions in parallel. Is this possible ?