Add non-animated stroke diagrams

[T-vK]

This PR contains the generator script as discussed in #47. It also contains a commit that adds all the generated SVGs. It's not perfect yet, but I think it's a good start.

Here's what the new non-animated images look like now:
https://github.com/T-vK/makemeahanzi/blob/master/svgs-still/20320-still.svg

Things that can possibly be improved:

• Implement an algorithm that ensures that the numbers aren't drawn too close to each other.
• Implement commander and allow setting the colors, font size etc using parameters.
• Use different colors.
• Use a different font styling (size, family, border, ...).
• Only embed CSS rules that are actually used.
• Generate the SVGs directly without requiring to have the animated ones first.

Unfortunately I don't have the time to implement these. Are there any minor things that you'd like me to adjust?

Edit: I found some interesting related projects: https://github.com/KanjiVG/kanjivg/tree/master/kanji https://github.com/cayennes/kanji-colorize/

I think they lack a lot of hanzi characters though.

[skishore]

These look quite nice, thank you!

I've actually integrated the stroke_caps code into the tool branch so it gets rerun every time the character gets exported again. This code can go there too. I'll do that as a follow-up.