* Add compiled files to gitignore

* Add two hello world files for testing environment

* Change setup.py to both resepect environment and raise helpful errors.

* Remove osx.sh, unused.

* Update test to set DUCC0_NUM_THREADS on MacOS

* Attempt to add macos test

* Give names to tests

* Fix missing run key in build.yml

* Remove linker flag

* Split up build and install for easier debugging MacOS

* Print current FC and CXX

* Print out compiler info from setup.py

* link gfortran to gfortran12

* Add fortran cmpiler to build

* Rename fcompiler

* try command line fcompiler

* Add fcompiler as environment variable just in case

* View fortran compiler version

* Try aliasing

* Try to create a link in PATH called gfortran

* set DUCC0_NUM_THREADS

* Try to build MacOS wheels

* Add environment for MacOS builds

* Remove xpreprocessor from build

* Try no special business for Darwin builds

* Fully remove unrequired MacOS business

* Add more MacOS-specific information in README

* Change info about DUCC0_NUM_THREADS

* Add info about gcc on MacOS

* Add comment about ducc0 num threads in test-pixell

* Change fortran files to just those generated by f2py in gitignore

* Build arm64 wheels

* Build arm wheels on linux too, sure

* Underscore, not dash, to architechture in build

* Upload to pypi testing

* Remvoe easy_install and only build manylinux

* Don't try to test arm64

* Actually test the wheels

* Remove arm64 builds from MacOS due to lack of cross-compilation ability

* Use CIBW test syntax

* Add -s to pytest for wheels

* Mvoe out of project directory to run tests

* Do not use deprecated pypi upload

* Remove pypi test deploy

* Avoid cython 3.0.4

* More cython 3.0.4 avoidance

* Fix quotes in cython version

* more cython version avoidance

* cython version avoidance for sdist

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Co-authored-by: Mathew S. Madhavacheril <mathewsyriac@gmail.com>