[FEATURE] Provide option to not inline request body to http path for GET, DELETE and HEAD

[yyoli-db]

Problem Statement
The current SDK will force the request body of GET, DELETE and HEAD to be inlined with the url path for http. This does not work with APIs which has request defined as nested protos.

Proposed Solution
Can we have an option to make the SDK to not inline the request.

Additional Context
Add any other context, references or screenshots about the feature request here.