Fix windows build and add windows CI #122

Job	Run time
bazel-integration-tests (instrumentation, ubuntu-latest)	2m 5s
bazel-integration-tests (walltime, codspeed-macro)	1m 9s
cmake-integration-tests (instrumentation, ubuntu-latest)	59s
bazel-integration-tests (off, ubuntu-latest)	23s
cmake-integration-tests (off, ubuntu-latest)	24s
windows-build (walltime)	48s
cmake-integration-tests (walltime, codspeed-macro)	1m 19s
windows-build (off)	48s
tests	21s
	8m 16s

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