[fix]fix CMakeLists.txt to set output directory for executables

[zhangm365]

set CMakeLists.txt output directory for executables "build/bin". It can avoid the compilation error:
"source file is not valid UTF-8".

[Copilot]

Pull Request Overview

This PR fixes a CMake configuration issue by setting the output directory for executables to "build/bin" to avoid compilation errors related to UTF-8 validation and potential name clashes with C++ standard headers.

• Adds CMAKE_RUNTIME_OUTPUT_DIRECTORY setting to place executables in a dedicated subdirectory
• Includes explanatory comment about avoiding name clashes with C++ standard headers like <mutex>

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