Fix windows build and add windows CI #135

Job	Run time
tests	9s
cmake-integration-tests (instrumentation, ubuntu-latest)	48s
bazel-integration-tests (instrumentation, ubuntu-latest)	1m 36s
cmake-integration-tests (off, ubuntu-latest)	22s
bazel-integration-tests (walltime, codspeed-macro)	1m 7s
cmake-integration-tests (walltime, codspeed-macro)	1m 16s
windows-cmake-build (walltime)	54s
windows-bazel-build (walltime)	1m 18s
windows-cmake-build (off)	59s
windows-bazel-build (off)	51s
bazel-integration-tests (off, ubuntu-latest)	22s
	9m 42s

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