[enhancement]: pull all files needed to generate upon model installation (setting)

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Contact Details

applesmycat - aol.com, xiaden@discord

### What should this feature add?

Not going to be able to get fancy with the write up here, as my internet is actually terrible right now, but I want to get this documented.

For the cases of use in an sneakernet / airgapped / secure network, Invoke should have the option to download all related files to generate from upon installing an image. this could either be in model manager, or in the actual settings file. something labeled "don't delay dependencies" or "make available offline". I know this is more of a problem with hugging face and the current workflow, but this is causing a world of pain for me currently. Every single other part of InvokeAI is perfectly content to be offline, so I thought it would be fine, and it ran testing fine when disconnected.

### Alternatives

_No response_

### Additional Content

_No response_