* build: add compile options for Windows and include string header
Set ssize_t definition for Windows builds to ensure compatibility. Include string header to support additional functionality in the grpc message handling.
* build: reorganize CMake options for clarity
Enhance CMake configuration by restructuring compilation options for MSVC and Windows. This improves readability and ensures compatibility with UTF-8 while maintaining the NOMINMAX definition on Windows.
* fix: add GIL for pybind11::bytes object accessing
Protect the access to the pybind11::bytes object with a GIL lock to avoid potential memory errors, and unify the handling of empty and non-empty strings.
Eliminate unused functions for empty byte objects in the export channel and export RPC modules to enhance code clarity.
* docs: update release notes and versioning
Add release notes for versions 0.8.2 and 0.8.3, highlighting important fixes, including resolutions for platform-specific linking issues and stability improvements for multi-threaded RPC calls. Increment version to 0.8.3.
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