Add support for memory consumed per request.

[anipnwr7777]

Add support for tracking memory consumed per request.

[arjunprakash027]

Hey, @anipnwr7777
Just to be clear, should we calculate the memory the program consumes for each API hit, or should we calculate the mem for each execution of the code provided by the user?
Thanks in advance!

[anipnwr7777]

Hey, the user should only be accounted for the memory their code have utilised, hence the answer to your question is "each execution of the code provided by the user".

[arjunprakash027]

@anipnwr7777 Perfect! We have requested a PR solving this issue. Would be great if you could review and let us know if something has to be changed! here is the pull request link
Thank you!