lloda/ra-ra: A C++20 array and expression template library with some J/APL features

lloda fd57d9d326 Give up on RA_STATIC_UNROLL		6 mesi fa
..
FindCBLAS.cmake	e789f7e2d7 Support CMake for building tests, examples	6 anni fa
cc.cmake	a2292645c4 Add options --no-sanitize, -DSANITIZE=0 to the test suite	8 mesi fa
config.guess	a67665fbf4 Rename extensions from .C .H to .cc to .hh	4 anni fa
ra.py	fd57d9d326 Give up on RA_STATIC_UNROLL	6 mesi fa