add falco back to the new iso

[medyagh]

we removed falco in 4ef9e51
also we removed sysdig needed by falco here
#22290

if any developer search for falco on minikube, this task is available to work on as Nice to have !

[ThankaBharathi]

Hello 👋

I’d like to take this issue as my first contribution to Minikube.
I plan to clean up remaining Falco references following commit 4ef9e51.

Please let me know if I can be assigned. Thank you!

[ThankaBharathi]

Hi @medyagh, I found that Falco was intentionally removed during the recent ISO/Buildroot update (“remove falco for good”).
To respect that decision, I propose reintroducing Falco as an optional Minikube addon (DaemonSet-based), enabled via minikube addons enable falco, instead of bundling it into the ISO.
Please let me know if this approach works before I proceed.