feat: first pass at d1 support

[AaronO]

This provides a first pass implementation of D1 support, I'll do some testing and tweaking tomorrow

A few notes:

• Instrumenting .batch() requires peaking into D1 internals
  • Not 100% sure if & how we should record sub-queries in a batch as spans
• D1 isn't replicated right now, so there's a huge divergence between reported duration (which is essentially CPU time in the compute note processing the query) and true wall clock time experienced by the worker.
• Not sure about leaking through the api names (i.e:first, all, ...) instead of grouping them under query/exec
• Going off https://github.com/cloudflare/workerd/blob/main/src/cloudflare/internal/d1-api.ts, we could likely just wrap _send but that's abstraction breaking, so I instead stuck to the publicly exposed TS APIs

Example

Here's some traces generated by this PR in an otel viewer:

[evanderkoogh]

I am so sorry it took 8 months to get this PR merged.. I have had to set away from maintaining the library for more than a year due to family circumstances and while Jacob and Dani did a great job in keeping things going in the meantime they might not have felt comfortable merging this PR.

Thanks again for the PR. I (and a bunch of people who have asked for D1 support) greatly appreciate it!

[AaronO]

@evanderkoogh No problem, life happens, been in a similar boat, hope things are better !

I think there were a few other things I wanted to instrument when I did this a while back, I'll take another look, wasn't 100% sure if this lib was still being developed.

[evanderkoogh]

Well it was in hiatus mode with some people looking to make sure it kept running, but without the time to really develop it. But I am back in business and this is now part of my job at Honeycomb, so will have a lot more time for it..