Increase the request body payload size limit to 10MB (#271)

[regularcoder]

Fixes #271.

Description

Increase the request body payload size limit to 10MB

[nitisht]

@trueleo PTAL

[trueleo]

@nitisht This increases the payload size to ~10mb. However just looked at where it is used and it seems like the limit is changed just for logstream service but not for ingest endpoint

[regularcoder]

Thank you @trueleo for reviewing. So @nitisht it seems logical to also add the limit to /ingest endpoint? After all it seems to serve same purpose.

Also - please let me know if I should go ahead and fix the "warning: variables can be used directly in the format! string" Clippy errors that are unrelated to my change.

[trueleo]

@regularcoder Yes, /ingest endpoint serves the same purpose as /logstream/{stream_name}. You can put the same JsonConfig to /ingest as well

[nitisht]

Thanks for the PR @regularcoder please proceed with the ingest changes as well. We can then merge this. You can ignore the clippy failure.