Feature: add Stripe-style 'pick your language' examples

[mikemaccana]

Arc 6 docs currently:

Which means python folk have to look at JS and Ruby, etc.

Proposing something like https://stripe.com/docs/billing/quickstart:

• Client side JS is just setting a translateX to show the right example (pretty low overhead). We can do this directly or have it generated by Svelte.
• Setting it once would change all examples on the page
• We can store preferred lang in a cookie maybe?

What do you think? I can do it if you want.

[brianleroux]

I think

FUCK YA

esp as we add other runtimes this will be hugely needed

[mikemaccana]

We did this in the V6 docs site we could port the code to the V8 docs site....

[tbeseda]

arc.codes now has a tabbed interface for code blocks in different languages. I think one idea that hasn't been implemented yet is to change other code samples on the same view, or even storing the preference across the site
Closing this and we can continue talking further improvements in #239