ncm-network: nmstate support for aliases ip

[aka7]

provide support for nmstate backend to create additional (alias) ip.

we have entries like this

/system/network/interfaces/eth0
/system/network/interfaces/eth0/aliases
/system/network/interfaces/eth0/aliases/dba
/system/network/interfaces/eth0/aliases/dba/broadcast = x.x.x.255
/system/network/interfaces/eth0/aliases/dba/fqdn = host1.exmaple.com
/system/network/interfaces/eth0/aliases/dba/ip = x.x.x.x
/system/network/interfaces/eth0/aliases/dba/netmask = 255.255.255.0

currently being ignored by nmstate.

• The version of the component you are using (rpm -q $component) 23.6.0-1
• What OS version you are using (/etc/redhat-release or similar) *rhel9