Add func (v *VirtioNetworkDeviceConfiguration) GetMACAddress() string?

[cfergeau]

Is your feature request related to a problem? Please describe.

https://developer.apple.com/documentation/virtualization/vznetworkdeviceconfiguration/3656653-macaddress?language=objc

The default value of this property is a random, locally administered, unicast address.

(I assume this is the same behaviour as calling NewRandomLocallyAdministeredMACAddress() explicitly)

I could not find a way to get the value of this default address

Describe the solution you'd like

This address is useful to know on the host as "/var/db/dhcpd_leases" can be parsed to do MAC address -> IP address look ups.
And the property is readwrite ( https://developer.apple.com/documentation/virtualization/vznetworkdeviceconfiguration/3656653-macaddress?language=objc ) so a getter in the go API would be nice to have

Describe alternatives you've considered

I'm suggesting this to make the API nicer, but it's easy to workaround with NewRandomLocallyAdministeredMACAddress()

[Code-Hex]

@cfergeau I support APIs at the same level.

https://pkg.go.dev/github.com/Code-Hex/vz/v3#MACAddress.String

However, VirtioNetworkDeviceConfiguration not return MACAddress struct, So I think it better to support GetMACAddress() *MACAddress