feat: support Astro _image endpoint

[jlarmstrongiv]

Closes #93

[ascorbic]

Hey! Thanks for this. We just need a few things to get this ready to merge.

As well as the individual comments, framework transformers need to implement delegateUrl. This is needed so that if the user passes a URL with an href that matches another CDN, we use that instead of the local server. Take a look at the Next.js tests for examples.

[jlarmstrongiv]

Hey! Thanks for this. We just need a few things to get this ready to merge.

As well as the individual comments, framework transformers need to implement delegateUrl. This is needed so that if the user passes a URL with an href that matches another CDN, we use that instead of the local server. Take a look at the Next.js tests for examples.

Sure! I think the delegateUrl function that next and vercel uses looks good to me, so I moved it to utils and used it for astro too

[jlarmstrongiv]

Just wanted to say thank you for your help reviewing this PR @ascorbic 👍 great suggestions

[jlarmstrongiv]

I fixed those issues and squashed to a single commit 👍

[jlarmstrongiv]

Hi @ascorbic 👋 please let me know if there’s anything else I need to fix with this PR—thanks again for reviewing 👍

[jstormail2]

@ascorbic and @jlarmstrongiv are there any blockers for this PR? I found unpic-img has an astro component, and wanted to use it with the astro assets image endpoint in my project

[ascorbic]

Thanks!

[jlarmstrongiv]

Thank you @ascorbic ! Your suggestions were very helpful 😄