feat!: enable fuller networking features in instance_template module

[tpdownes]

• add all fields of network_interface blocks to the input variable additional_networks
• version bump of provider is due to GA availability of network_performance_config block

There is no example for additional_networks. It is moderately more challenging than additional_disks as a good example would require networks to exist and null is a slightly more attractive value for some of these fields. What are your thoughts?

[bharathkkb]

Thanks for the PR @tpdownes

I think showing an example wired with networks could be useful (we do that in a few places like GKE) but that can be a follow up.