Compatibility calico bgp

[nbisson]

Following #377

Add calico-bgp compatibility.

If compatibility enabled :

• Added detection of pod IP updates to enrich the "AllowedIps" attribute of WireGuard using the Status.podIP ;
• Stopped using node CIDR addresses because calico's IPAM plugin doesn't respect the values given to Node.Spec.PodCIDR ;

How to use ?

kubectl apply -f https://raw.githubusercontent.com/squat/kilo/main/manifests/crds.yaml
kubectl apply -f https://raw.githubusercontent.com/squat/kilo/main/manifests/kilo-k3s-calico-bgp.yaml