Merge topic 'rapidhash'

ed7a690e83 String: Use rapidhash for hashing
bc23835e45 rapidhash: Make vendored header available to CMake sources
b6837dc4c3 rapidhash: Fix compilation as C++14 with GCC 5.5
6bf80fd430 Merge branch 'upstream-rapidhash' into rapidhash
169c604ada rapidhash 2025-07-23 (bc4b4baa)
e34e4d1a88 rapidhash: Add import script to get rapidhash v3

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !12263