Scale multi-width unicodes

[alixander]

closes #813
closes #513
closes #749
probably missing like 5 other issues @bo-ku-ra 's opened ;)

[bo-ku-ra]

awesome!

Emoji ZWJ Sequence / U+200D ZERO WIDTH JOINER (ZWJ)
https://emojipedia.org/emoji-zwj-sequence/

especially
Family: Woman, Woman, Girl, Baby is wide.

[bo-ku-ra]

i think the test would require a mixed text of double-byte charactors, single-byte charactors, and emojis, too.

[bo-ku-ra]

{style.stroke-width: 15; style.double-border: true} <- there are renderings inside.

• width 15:max + double-border(v 0.2.0)

https://play.d2lang.com/?l=&script=etzY9bip5XHjzMeN-x83rnrcOPVxY0s12GA9ZPusFAxNrRUg4ihRYaVQUlSaWqvABQgAAP__&

[bo-ku-ra]

{style.font-size:100}

https://play.d2lang.com/?l=&script=SrRSeNzY9bip5XHjzMeN-x83rnrcOPVxY4tCNdhwPXiAWSkYGhhYK0BEkV1ipWBoChNHiSQrhZKi0tRariQCVpBkWDLx7rUgy7WJCrp2Ckm6dslcgAAAAP__&

[alixander]

@bo-ku-ra updated with your tests. the method is not 100% accurate, it gives it a little too wide, but I think by an acceptable amount. What do you think

[alixander]

@nhooyr tagged you to just take a glance in case anything raises a flag to you, no need to dig into

[nhooyr]

✅

[bo-ku-ra]

@alixander
d2 v0.2.0 was designed with a shorter vertical length, but it looks good.
( maybe the whole diagram looks squashed? )

[bo-ku-ra]

fyi
https://en.wikipedia.org/wiki/Golden_ratio
https://en.wikipedia.org/wiki/Silver_ratio (<- japanese like it. mickey mouse, doraemon, google logo, etc.)