Add unit test for alternate rules loader #301

Job	Run time
fetch-version / fetch-version	22s
build-dev-packages / build-wasm-package	4m 43s
build-dev-packages / build-macos-package	11m 59s
build-dev-packages / build-musl-package	25m 30s
build-dev-packages / build-modern-bpf-skeleton	2m 18s
build-dev-packages / build-win32-package	9m 25s
build-dev-packages-arm64 / build-modern-bpf-skeleton	2m 17s
build-dev-packages-arm64 / build-musl-package	0s
build-dev-packages-arm64 / build-macos-package	0s
build-dev-packages-arm64 / build-wasm-package	0s
build-dev-packages-arm64 / build-win32-package	0s
build-dev-packages / build-packages	23m 5s
build-dev-packages-arm64 / build-packages	18m 39s
test-dev-packages-arm64 / test-packages	1m 20s
test-dev-packages (static) / test-packages	1m 22s
test-dev-packages / test-packages	2m 28s
publish-dev-packages / publish-packages	5m 10s
publish-dev-packages / publish-packages-deb	3m 57s
build-dev-docker-arm64 / build-docker	9m 16s
build-dev-docker / build-docker	8m 39s
publish-dev-docker / publish-docker	10m 24s
	2h 20m 54s

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