build: external project add for sysdig
build: external project add for sysdig

Co-authored-by: Lorenzo Fontana <lo@linux.com>

Signed-off-by: Leonardo Di Donato <2012e0ca99d70aa6c893822ff73002216e5dba72@gmail.com>

draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco