build(feature): drop redundant sync_wrapper

[0x676e67]

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[Copilot]

Pull Request Overview

This PR removes the redundant sync_wrapper dependency from the core HTTP client implementation by refactoring the ResponseFuture to use a direct Pin<Box<dyn Future>> instead of wrapping it with SyncWrapper. The changes move ResponseFuture to its own module and make sync_wrapper an optional dependency only needed for specific features.

• Extracted ResponseFuture implementation to a separate future.rs module
• Replaced SyncWrapper<Pin<Box<dyn Future>>> with direct Pin<Box<dyn Future>>
• Made sync_wrapper an optional dependency for multipart and stream features only

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/core/client/mod.rs	Removes ResponseFuture implementation and sync_wrapper usage, adds future module import
src/core/client/future.rs	New module containing the refactored ResponseFuture implementation without sync_wrapper
src/client/http/future.rs	Updates import to use the new ResponseFuture location
src/client/http/aliases.rs	Removes unused CoreResponseFuture type alias
Cargo.toml	Makes sync_wrapper optional, only required for specific features