imgbundler and CLI fixes

[nhooyr]

See individual commits.

And please test @alixander

[nhooyr]

Example:

script

server: {
  shape: image
  icon: https://iconss.terrastruct.com/tech/022-server.svg
}

github: {
  shape: image
  icon: https://icon2.terrastruct.com/dev/github.svg
}

tri: {
  shape: image
  icon: /tmp/jingle.png
}

server -> github

watch terminal

watch render

prod terminal

prod render

thoughts

not a fan of the prod render, maybe we ought to include the error within the svg just like I was doing before.
Or at the very least replace the image with a placeholder.

[nhooyr]

I opened #280

[alixander]

👏 . imgbundler code so much cleaner.

add in the release notes that the bundle flag now works.

removing the conversion from text/xml to image/svg+xml would cause issues viewing in browser i think. it's why i did it in the first place: https://stackoverflow.com/questions/31755822/why-does-this-svg-work-being-viewed-raw-in-the-browser-but-not-in-a-webpage

[alixander]

for me, it doesn't show the broken img. it used to

[nhooyr]

@alixander what's your d2 text there?

[alixander]

test: {
  icon: https://no.com
}

test2: {
  icon: https://no.com
}

works: {
  icon: https://www.howtogeek.com/wp-content/uploads/2018/06/shutterstock_1006988770.png
}

test -> test2

[nhooyr]

Weird I can confirm, don't see the image either. I don't know why in that particular example. Mine still works as expected.

Could it be unrelated to this PR? I'm not sure how any of my changes could have caused this.

[alixander]

yeah, maybe some SVG thing. we'll just note in that issue.