{tools}[foss/2025a] t-SNE-CUDA v3.0.1 w/ CUDA 12.8.0

[baverhey]

(created using eb --new-pr)

Add t-SNE-CUDA 3.0.1 easyconfig for foss-2025a with CUDA 12.8.0.
Align recipe with the 2025a toolchain and dependency stack.
Fix GCC 14/CUDA 12.8 compatibility by enforcing C++17/CUDA17.
What changed

Added/updated t-SNE-CUDA-3.0.1-foss-2025a-CUDA-12.8.0.eb.
Kept external cxxopts and CUDA architecture patching from existing upstream approach.
Set CMake standards:
DCMAKE_CXX_STANDARD=17
DCMAKE_CUDA_STANDARD=17
Added preconfigure rewrite of upstream hardcoded -std=c++14 to -std=c++17 in source CMakeLists.txt.
Used EasyBuild Python explicitly for pip install step in install_cmd.
Why

Build failed on foss-2025a (GCC 14.2.0 + CUDA 12.8.0) with many C++ header redefinition errors, caused by mixed/legacy standard settings.
Forcing a consistent C++17/CUDA17 toolchain resolves these compile-time conflicts.
Dependencies

This PR depends on:
#25509
#25657
#26026
#26027
#26404

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