inject context for batching loops

[aniketmaurya]

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

Batching loops currently lacks context injection. This PR enables that.

• updated tests
• updated README

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in GitHub issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

[codecov]

Codecov Report

Attention: Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.

Project coverage is 80%. Comparing base (c89449d) to head (154a0c0).

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #139   +/-   ##
===================================
  Coverage    79%    80%           
===================================
  Files        13     13           
  Lines       870    880   +10     
===================================
+ Hits        691    700    +9     
- Misses      179    180    +1     

[lantiga]

Looks good, each request needs to have its own context, so a list of them is the only sensible thing.
Please add to README and we can proceed!

[aniketmaurya]

hi @lantiga, I have added the README changes. could you take a look again please?

[lantiga]

Good to go!