Short sharable links

[rvcas]

The Problem

Currently, there is a limit to how much code can be in a share link because the the code is a brotli compressed base 64 encoded string in the query parameter.

The Solution

Since the playground is already on cloudflare, we can probably create a cloudflare worker, which uses KV to map a slug to brotli compressed bytes of code which can be loaded via fetch in the playground

We probably want to rate limit that.