Option for API-RATE-LIMITER for interservice http request

[aryanmehrotra]

Is your feature request related to a problem? Please describe.
When connecting to an external service for example: zoho - they have a limit on how many request should be sent per min or per sec etc.
Which the user would need to implement separately i.e a queue.

Describe the solution you'd like
Similar to default headers, basic auth etc we should have an option to queue the api calls based on the setting defined.

Describe alternatives you've considered
Alternatively I will write the code myself to rate limit outgoing calls

Additional context
Usage would be something like:

app.AddHTTPService("zoho", app.Config.Get("ZOHO_HOST"),  
&gofrSvc.APIRateLimit(10, time.Duration(1)*time.Second))

Reference : https://www.zoho.com/billing/api/v1/introduction/#api-call-limit

[vaidehiadhi]

@Umang01-hash can you please assign this issue to me

[Umang01-hash]

Sure @vaidehiadhi done.