Enable injectAtEnd from unimport

[antfu]

Describe the feature

Currently, unimport always injects the imports at the beginning of the file. This sometimes creates confusing circular reference errors, or alters the order of the imports.

To improve this, I implemented injectAtEnd feature (unjs/unimport@6b1ba91) on unimport but not enabled by default yet.

https://github.com/unjs/unimport/blob/1be4b7baba7af772ea863f2bfe529daa2830bc12/src/types.ts#L256-L261

Enabled on https://github.com/antfu/unplugin-auto-import by default and it does solve some circular reference issues. So far, I guess it works for most of the cases, and only a potential bug needs to be investigated: unplugin/unplugin-auto-import#327

Creating this issue to raise this up, and see if you think it something worth to have in the next minor or so.

Additional information

• Would you be willing to help implement this feature?
• Could this feature be implemented as a module?

Final checks

• Read the contribution guide.
• Check existing discussions and issues.

[danielroe]

If you still think this is worth adopting, let's go ahead with this for v4/v3.14.