Use Result in place of Wrapped in the public api

[Jonxslays]

Summary

Implements From<Wrapped<T>> for Result<T, HttpError>.
Returns Result<T, HttpError> from all service methods, and async client methods.
Wrapped is now internal implementation detail.

Checklist

• I have run cargo test and all tests pass.
• I have run cargo fmt and the code is formatted.
• I have run cargo clippy in pedantic mode and refactored.
• I have included documentation for any new structs or methods.
• I have updated tests for any code I addded/changed/deleted.
• I have updated the CHANGELOG to include my changes.

Related Issues

Resolves #37