This task will add the following commands from FRR to VyOS:
```
show evpn
show evpn es
show evpn es <es-id>
show evpn es detail
show evpn es-evi
show evpn es-evi detail
show evpn es-evi vni <num>
show evpn es-evi vni <num> detail
show evpn mac vni <num>|all detail
show evpn vni
show evpn vni detail
show evpn vni <num>
```
Additionally, it will update the following commands to be more API friendly and have completion helpers:
```
show evpn access-vlan
show evpn arp-cache
show evpn mac
show evpn next-hops
show evpn rmac
```