Refactor CUDA architectures configuration and update requirements

[ZedongPeng]

This PR updates the build system to improve CUDA architecture targeting and corrects the documentation for build requirements.

Changes

1. CMake Configuration (CMakeLists.txt)

• Logic Update: Introduced a check for CMAKE_VERSION.
• CMake ≥ 3.23: Now sets CMAKE_CUDA_ARCHITECTURES to all. This automatically targets all supported real and virtual architectures, simplifying future maintenance.
• CMake < 3.23: Added a manual fallback list (60 through 90) and explicitly added 90-virtual. This ensures forward compatibility with future GPUs (via PTX JIT) when building with older CMake versions.

2. Documentation (README.md)

• Requirements: Updated the "Build Tools" section to specify CMake (≥ 3.20) instead of 3.22, aligning the documentation with the actual project requirements.