feat (request): expose req timeout

[aarcex3]

Summary

Implemented GetRequestTimeout func to get the timeout attribute of the request.

Related Issue

#1745

pd: is this what you guys had in mind?. I still need to document this btw.

[erikdubbelboer]

Why as a string?

[aarcex3]

Just a PoC, I was waiting for some guidance and suggestion.
What type of return data do you suggest?

[erikdubbelboer]

I think just returning a time.Duration is good. The most important part is the description of the function, it should describe exactly what this is for.

[erikdubbelboer]

Thanks!