Fixes for MSVC 1940 & 1941, CMake 3.30, Github Actions Node16

[ptheywood]

Fixes a number of issues caused by changes in external tools

• Short term fix for CMake 3.30 deprecating current use of FetchContent_Populate. This will need a more permanent fix in the future, see CMake 3.30 deprecates FetchContent_Populate #1223.
• MSVC 1940 with CUDA < 12.3 requires CUDAFLAGS=-allow-unsupported-compilers plus CMake >= 3.29.4.
  • A warning is emitted to potentially effected users
  • CI is ammended to run successfully
  • Closes Windows CI failures #1211
• MSVC 1941 requires CUDA >= 12.4 due to a static assertion change in the STL
  • A warning is emitted to potentially effected users
  • CI is ammeded so CUDA <= 12.3 uses VS2019
• Applies a short term workaround to CI for a June 2024 Github Actions change which removes support for using actions/checkout etc in Manylinux2014 containers.
  • This will stop working eventually, forcing us to move to Manylinux2_28 in the future. See CI Github Actions deprecations #1190 & Replace manylinux2014 with manylinux_2_28  #1224
• Updates CI to include CUDA 12.6 builds
  • Requires additiaon includes in 2 examples.
  • Closes FLT_MAX undefined in CUDA 12.5 for the circles examples #1216
• Updates the visualisation repo hash, as similar fixes are required in the separate repository.
  • Required CI and CMake Fixes FLAMEGPU2-visualiser#136 to be merged and the appropraite commit hash setting in this repository. This will need ammending during the next release version.