Add button to attach an ephemeral IP

[charliepark]

Fixes #2288 — enables a means of attaching an ephemeral IP to the instance when the instance …
A) does not have an ephemeral IP,
and
B) has a network interface

Normally, we'd set up a button to be visible-but-disabled when it can't be interacted with. Because the normal state for instances is that they wouldn't need to attach an ephemeral IP (there's a max count of 1 for ephemeral IPs), and it would be a big disabled button cluttering up the UI, we decided to hide the button when they can't attach an ephemeral IP.

[vercel]

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Name	Status	Preview	Updated (UTC)
console	✅ Ready (Inspect)	Visit Preview	Jun 27, 2024 6:55pm

[david-crespo]

Just a note, no changes needed: I was wondering if we could get this submit working through the normal onSubmit mechanism on the form. But because of how Modal.Footer works:

console/app/ui/lib/Modal.tsx

Lines 142 to 150 in 34c648b

	<Button
	size="sm"
	variant={actionType}
	onClick={onAction}
	disabled={disabled}
	loading={actionLoading}
	>
	{actionText}
	</Button>

we don't have the direct control over the button, which would let us set form={formRef} type="submit" on it, which would let us the put this functionality in the onSubmit on the form.

[david-crespo]

let's party