Network interface create form improvements

[david-crespo]

After #2146, I checked and saw we do have one IP field left, in the network interface create form. I think it can stay in because it's a private IP, so it's a lot easier to pick a valid one at random. but we can improve the form in a few ways:

• Auto select first VPC and subnet, they should almost always be what you want
• Collapse VPC, subnet, and address fields under Advanced
• Validate IP address with validateIp

console/app/forms/network-interface-create.tsx

Lines 82 to 87 in 5cae211

	<TextField
	name="ip"
	label="IP Address"
	control={form.control}
	transform={(ip) => (ip.trim() === '' ? undefined : ip)}
	/>