seccomp: implement seccomp filter context
seccomp: implement seccomp filter context

Signed-off-by: Radu Matei Lăcraru <032aa9205a307920f456c1e18513d2ed7c34d21c@amazon.com>

firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker