feat: look up modern formats for images with the same filename

[razonyang]

Close #470, it works only on the images placed on static folder.

[netlify]

✅ Deploy Preview for hugo-theme-bootstrap ready!

Name	Link
🔨 Latest commit	e6e5d6e
🔍 Latest deploy log	https://app.netlify.com/sites/hugo-theme-bootstrap/deploys/6240b20b23c52800092044c8
😎 Deploy Preview	https://deploy-preview-490--hugo-theme-bootstrap.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[LITUATUI]

Thanks!

[LITUATUI]

Just a heads up for the people that want to batch convert their JPG and PNG images to the best image format today, AVIF.

Use ImageMagick to batch convert all JPG and PNG files in your image folder.

In the terminal:

magick mogrify -format avif -depth 10 -define heic:speed=2 *.jpg

magick mogrify -format avif -depth 10 -define heic:speed=2 *.png

This will convert to AVIF in 10-bit.

[LITUATUI]

@razonyang this is working great for images inside the posts, but not for featured images in the front matter.

Images in the image viewer (gallery) are also in the original format.

[razonyang]

@LITUATUI I missed the featured images totally, I'll fix it ASAP. As for the viewer, I don't think it's possible to detect which picture was used by the browser.

[razonyang]

@LITUATUI Fixed by latest commit.