make build and test work on linux, mac , windows.

[pm100]

Does several things to the build

• uses only cmake, no dependency on 'make'
• adds the tests to cmake, removing the need for shell scripts to run the tests
• make the gcc and clang builds use -f sanitize
• fixes the MSVC build for windows
• updates the readme to reflect the changes for building and testing

github workflow build still uses make. I think that should be changed to use only cmake too

[stale]

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