docs: add documentation for returns

[KreativeThinker]

All end points require return JSON sample for documentation

[adithyasunil04]

i can take up this problem
@KreativeThinker do u prefer the documentation snippet inline with functions or seperately saved in a json file?

[KreativeThinker]

I have reviewed your PR and mentioned how to add the response models. You can remove the textual example and just add the respective pydantic response models to the router and that should be sufficient.