Add route type in output of "antctl get bgproutes"

[rajnkamr]

Describe what you are trying to solve

Currently there is no way to know that whether advertised routes displayed are pod cidr, egress ip or service cidr

antctl get bgproutes
ROUTE
10.244.1.0/24
172.18.0.6/32

Describe the solution you have in mind

Add Route Type like Pod, Egress, ClusterIP, LoadBalancerIP, ExternalIP in the output

antctl get bgproutes
ROUTE                TYPE
10.244.1.0/24        Pod
172.18.0.6/32        Egress

Describe how your solution impacts user flows

N/A
Describe the main design/architecture of your solution

N/A
Alternative solutions that you considered

N/A
Test plan

N/A
Additional context
Later, we can also add capability to filter advertised routes by route type.