feat(libsinsp/container_engine): proper containerd support #2051

Job	Run time
build-test-e2e-amd64 😇 (bundled_deps)	14m 24s
build-test-e2e-arm64 😇 (bundled_deps)	27m 38s
test-e2e-amd64-kmod 😇 (bundled_deps)	9m 43s
test-e2e-amd64-bpf 😇 (bundled_deps)	11m 14s
test-e2e-amd64-modern-bpf 😇 (bundled_deps)	11m 17s
test-e2e-arm64-kmod 😇 (bundled_deps)	17m 59s
test-e2e-arm64-bpf 😇 (bundled_deps)	18m 31s
test-e2e-arm64-modern-bpf 😇 (bundled_deps)	20m 16s
	2h 11m 2s

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