XMas-Day-4: DataSet<T>: helpers, estimators, math functions, restructure DataSet #2091

Job	Run time
Update the docker container if it is modified	6s
gcc-14 \| Release	7m 14s
gcc-14 \| Debug	9m 52s
gcc-13 \| Release	5m 1s
gcc-13 \| Debug	5m 29s
clang-18, \| Release	4m 50s
clang-18, \| Debug	5m 54s
emcc \| Release	7m 11s
emcc \| Debug	7m 9s
	52m 46s

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