Update RequestX adapter for v1.0.2 with httpx-like API

[wuqunfei]

Summary

Updates the RequestX HTTP client adapter to support RequestX 1.0.2, which introduces an httpx-compatible API. This change modernizes the adapter to use the new Client and AsyncClient classes instead of the previous Session API.

Key Changes

• Dependency Update: Bumped minimum RequestX version from 0.1.0 to 1.0.2 in pyproject.toml
• API Migration: Replaced requestx.Session() with requestx.Client() for sync operations and requestx.AsyncClient() for async operations
• Parameter Updates: Changed request parameter from data to content to match httpx API conventions
• SSL Verification: Moved verify_ssl from per-request to client initialization via verify parameter
• Async Cleanup: Updated async context manager exit to use await self.async_client.aclose() instead of synchronous close()
• Streaming Support: Implemented proper streaming with client.stream() and async_client.stream() context managers, replacing the previous fallback behavior
• Response Timing: Simplified response time calculation to use response.elapsed.total_seconds() for sync requests (when available) and manual timing for async requests
• Chunk Counting: Improved chunk count calculation for streamed responses based on actual content size

Implementation Details

• Removed unused time import from module level (now imported locally in streaming methods)
• Updated docstrings to reflect RequestX 1.0.2 and its httpx-like API
• Renamed internal attributes from session/async_session to client/async_client for clarity
• Added verify_ssl as instance variable initialized during client creation
• Streaming methods now properly iterate through response chunks using iter_bytes() and aiter_bytes() with 8KB chunk size

https://claude.ai/code/session_018m5XH5sVYS25zAr6258ygf